Third Trimester Checklist: 25 Expert, Uplifting Baby Steps

Introduction

Congratulations! You’ve reached the final stretch of pregnancy. Research shows that expectant parents who follow a structured third trimester checklist report 40% less anxiety about delivery and feel significantly more prepared for their baby’s arrival. The third trimester brings unique challenges and exciting milestones, making organization essential for a smooth transition to parenthood.

This comprehensive third trimester checklist transforms overwhelming preparation into manageable, expert-backed steps. You’ll discover evidence-based essentials, week-by-week guidance, and practical solutions that ensure you’re ready for labor, delivery, and those precious first days with your newborn.

Understanding Your Third Trimester Journey

The third trimester spans weeks 28 through 40 (and beyond), marking your baby’s final growth phase and your body’s preparation for birth. During this period, your baby gains approximately 2-3 pounds and develops crucial systems needed for life outside the womb.

Key Third Trimester Changes:

• Baby’s rapid growth: Weight doubles in the final trimester
• Lung maturation: Critical development for breathing
• Brain development: Rapid neural connections forming
• Your body’s preparation: Hormone changes preparing for labor

Understanding these changes helps contextualize why your third trimester checklist focuses heavily on medical monitoring, safety preparation, and readiness planning.

Medical & Health Essentials (Steps 1-7)

Step 1: Schedule Regular Prenatal Appointments

Your appointment frequency increases during the third trimester. Most healthcare providers recommend:

• Weeks 28-36: Appointments every 2-4 weeks
• Weeks 36-40+: Weekly appointments
• Post-40 weeks: Twice-weekly monitoring

Each visit typically includes weight checks, blood pressure monitoring, urine tests, and fetal heart rate assessment. Add these scheduled appointments to your third trimester checklist and set calendar reminders.

Step 2: Complete Third Trimester Laboratory Tests

Essential tests during this period include:

Group B Strep Screening (35-37 weeks):

• Simple vaginal and rectal swab
• Determines antibiotic needs during labor
• Affects birth planning decisions

Blood Work Updates:

• Complete blood count for anemia screening
• Glucose tolerance test follow-up if needed
• Blood type and Rh factor confirmation

Step 3: Vaccination Schedule

Tdap Vaccine (27-36 weeks):

• Protects the baby from whooping cough
• Maternal antibodies are transferred to the baby
• Required for each pregnancy, regardless of previous vaccination

Seasonal Vaccines:

• Flu vaccine (safe throughout pregnancy)
• COVID-19 booster per current guidelines
• Discuss timing with your healthcare provider

Step 4: Monitor Fetal Movement Patterns

Establishing your baby’s movement baseline becomes crucial in the third trimester:

• Track daily patterns: Note active periods
• Count kicks when needed: 10 movements in 2 hours
• Report changes immediately: Decreased movement requires urgent evaluation
• Trust your instincts: You know your baby’s normal patterns best

Step 5: Learn Warning Signs

Critical symptoms requiring immediate medical attention:

Urgent Warning Signs:

• Severe headaches with vision changes
• Persistent chest pain or shortness of breath
• Heavy bleeding or fluid leakage
• Sudden swelling in the face, hands, or feet
• Decreased fetal movement
• Fever above 100.4°F (38°C)

Program your healthcare provider’s after-hours number into your phone and include these warning signs in your third trimester checklist.

Step 6: Discuss Birth Preferences

Begin conversations about labor and delivery preferences:

Pain Management Options:

• Natural pain relief techniques
• Medication options (epidural, nitrous oxide)
• Alternative methods (water birth, massage)

Labor Preferences:

• Movement during labor
• Monitoring preferences
• Support person roles

Step 7: Plan for Postpartum Care

Discuss postpartum expectations and support:

• Recovery timeline: Normal healing expectations
• Breastfeeding support: Lactation consultant availability
• Mental health screening: Postpartum depression awareness
• Follow-up schedule: 6-week checkup planning

Hospital & Birth Preparation (Steps 8-12)

Step 8: Choose Your Birth Location

Hospital Selection Criteria:

• NICU availability: Level of care provided
• Birthing options: Natural birth support, water birth availability
• Visiting policies: Partner and family accommodation
• Breastfeeding support: Lactation services and policies

Research facilities in your area and schedule tours during weeks 30-34 for your third trimester checklist.

Step 9: Create Your Birth Plan

Draft a one-page birth plan covering:

Medical Preferences:

• Pain management choices
• Labor positions and mobility
• Monitoring preferences (intermittent vs. continuous)
• Intervention preferences

Newborn Care Preferences:

• Delayed cord clamping
• Immediate skin-to-skin contact
• Vitamin K administration
• Eye ointment application
• First bath timing

Cultural/Religious Considerations:

• Dietary restrictions
• Religious ceremonies
• Language interpretation needs

Step 10: Pre-Register at Your Birth Facility

Complete pre-registration to streamline admission:

Required Documents:

• Photo identification
• Insurance cards
• Emergency contact information
• Healthcare provider information
• Birth plan copies

Logistical Planning:

• Multiple routes: Plan day and night driving routes
• Parking information: Location and payment methods
• Entrance procedures: After-hours access protocols
• Communication plan: Who to call and when

Step 11: Pack Your Hospital Bags

For the Birthing Parent:

Essential Items:

• Comfortable going-home outfit (maternity size)
• Nursing bras (2-3, one size larger than current)
• High-waisted underwear (disposable preferred)
• Heavy-flow menstrual pads
• Comfortable slippers with grip
• Long phone charger cable
• Lip balm and basic toiletries
• Comfortable robe or nightgown

Comfort Items:

• Extra pillows with colored pillowcases
• Essential oils or aromatherapy items
• Snacks (check hospital policies)
• Entertainment (books, tablet, music)

For Partners/Support People:

Essential Items:

• Change of clothes (2-day supply)
• Toiletries and medications
• Phone chargers and portable batteries
• Snacks and drinks
• Important phone numbers list
• Comfortable shoes for long standing

Comfort Items:

• Small pillow for a hospital chair
• Eye mask and earplugs
• Camera or video equipment
• Labor support tools (massage oils, tennis balls)

For Baby:

Going-Home Essentials:

• 2-3 zip-front onesies (newborn and 0-3 months)
• Sleep gowns or footie pajamas
• Swaddle blankets
• Hat and mittens
• Car seat (properly installed)

Most hospitals provide diapers, wipes, and basic baby care items during your stay.

Step 12: Install and Inspect the Car Seat

Installation Requirements:

• Rear-facing only: Until at least 2 years old
• Proper angle: 30-45 degree recline for newborns
• Secure installation: Less than 1 inch movement at the belt path
• Professional inspection: Certified technician check recommended

Schedule car seat installation and inspection by week 36 to include in your third trimester checklist.

Baby Gear & Nursery Setup (Steps 13-17)

Step 13: Create a Safe Sleep Environment

Safe Sleep Essentials:

• Firm, flat mattress: Meets current safety standards
• Fitted sheet only: No bumpers, blankets, or pillows
• Room-sharing setup: Bassinet or crib in your bedroom
• Smoke-free environment: No smoking in the home or car

The American Academy of Pediatrics recommends room-sharing without bed-sharing for at least the first 6 months to reduce SIDS risk by up to 50%.

Step 14: Prepare Feeding Supplies

For Breastfeeding:

• Electric or manual breast pump
• Milk storage bags or containers
• Nursing pillow
• Lanolin cream for nipple care
• 2-4 bottles for expressed milk

For Formula Feeding:

• 6-8 bottles with newborn nipples
• Formula supply (2-week starter amount)
• Bottle brush and sterilizing equipment
• Burp cloths and bibs

For Combination Feeding:

• Supplies from both categories above
• Plan for transitioning between breast and bottle

Step 15: Stock Diapering Essentials

Newborn Diaper Supply:

• Disposable option: 2-3 boxes newborn size, 1-2 boxes size 1
• Cloth option: 20-24 cloth diapers, covers, and liners
• Changing supplies: Wipes, diaper cream, changing pad
• Organization: Diaper caddy or changing table setup

Newborns use 8-12 diapers daily, so stock accordingly for your third trimester checklist.

Step 16: Organize Baby Clothing

Newborn Wardrobe Essentials:

• Onesies: 8-10 short-sleeve, 4-6 long-sleeve
• Sleep gowns: 6-8 for easy diaper changes
• Footie pajamas: 4-6 pairs
• Pants and leggings: 4-6 pairs
• Hats and mittens: 2-3 sets
• Socks: 6-8 pairs

Size Strategy:

• Newborn size: Limited quantity (babies grow quickly)
• 0-3 months: The Majority of the initial wardrobe
• 3-6 months: Some items for growth

Step 17: Prepare Bathing Area

Bath Setup:

• Infant bathtub: Fits in a kitchen sink or a regular tub
• Non-slip mat: For the tub bottom
• Gentle baby wash: Fragrance-free formula
• Soft towels: 2-3 hooded baby towels
• Washcloths: 4-6 soft cloths
• Bath thermometer: Ensures proper temperature (98-100°F)

Home & Safety Preparation (Steps 18-21)

Step 18: Baby-Proof Essential Areas

Immediate Safety Concerns:

• Electrical outlets: Install safety plugs
• Sharp corners: Add cushioned guards to coffee tables
• Cabinet locks: Secure cleaning supply storage
• Stair gates: Install if you have stairs (not needed immediately)

Smoke and Carbon Monoxide Detection:

• Test all detectors monthly
• Replace batteries if needed
• Install additional detectors near the nursery

Step 19: Prepare Pet Introduction Plan

Gradual Introduction Strategy:

• Scent introduction: Bring home the baby’s blanket first
• Supervised meetings: Keep initial interactions brief
• Safe spaces: Create pet retreat areas
• Routine maintenance: Keep pet schedules consistent

Safety Considerations:

• Never leave pets alone with a newborn
• Ensure pet vaccinations are current
• Address any behavioral concerns before the baby arrives

Step 20: Organize Emergency Information

Emergency Contact List:

• Healthcare provider numbers (day and after-hours)
• Hospital labor and delivery direct line
• Pediatrician contact information
• Poison control center: 1-800-222-1222
• Local emergency services

Medical Information Folder:

• Insurance cards (copies)
• Medical history summaries
• Medication lists
• Allergies and special conditions
• Birth plan copies

Step 21: Adjust Home Environment

Temperature and Comfort:

• Room temperature: Keep the nursery between 68-72°F
• Humidity control: 40-50% humidity prevents dry skin
• Lighting options: Dim lighting for nighttime feeding
• Noise management: White noise machine or app

Water Safety:

• Hot water heater: Set to 120°F maximum
• Faucet covers: Prevent head injuries
• Toilet locks: Install for future toddler safety

Administrative & Financial Tasks (Steps 22-24)

Step 22: Complete Maternity Leave Paperwork

Documentation Requirements:

• FMLA forms: If eligible, complete 30 days before the due date
• Employer policies: Review company-specific benefits
• State benefits: Research state-provided family leave
• Partner leave: Coordinate paternity/partner leave timing

Financial Planning:

• Budget adjustments: Account for reduced income
• Benefit continuation: Understand insurance changes
• Childcare costs: Research and budget for future needs

Step 23: Update Insurance and Benefits

Health Insurance Updates:

• Add baby: Understand enrollment deadlines (typically 30 days)
• Coverage comparison: Review pediatric care benefits
• Specialist access: Understand referral requirements
• Prescription coverage: Verify baby medication coverage

Life Insurance Considerations:

• Beneficiary updates: Add baby as beneficiary
• Coverage assessment: Evaluate if additional coverage is needed
• Term vs. whole life: Consider family protection needs

Step 24: Organize Important Documents

Document Checklist:

• Birth certificate: Understand hospital procedures
• Social Security card: Application timeline and requirements
• Passport application: If international travel is planned
• Will updates: Include baby in estate planning

Financial Account Updates:

• Bank accounts: Consider adding the baby as a beneficiary
• Investment accounts: Update beneficiary information
• Retirement accounts: Review and update as needed

Support System & Final Preparation (Step 25)

Step 25: Activate Your Support Network

Immediate Postpartum Support:

• Meal train: Organize friends/family meal delivery
• Childcare backup: Arrange care for older children
• Household help: Plan cleaning and errands assistance
• Night support: Consider partner schedules and help options

Professional Support Team:

• Pediatrician: Confirm first appointment (within 48-72 hours)
• Lactation consultant: Know how to access services
• Doula or postpartum care: If desired, confirm availability
• Mental health support: Know resources for postpartum concerns

Communication Strategy:

• Birth announcement plan: Who to call first
• Social media strategy: Decide on a sharing timeline
• Visitor guidelines: Set boundaries for the first week’s home
• Work communication: Plan a professional update timeline

Week-by-Week Third Trimester Timeline

Weeks 28-30: Foundation Setting

• Schedule remaining prenatal appointments
• Begin hospital bag preparation
• Research pediatricians and schedule interviews
• Complete car seat installation research

Weeks 31-33: Major Preparation

• Finalize hospital pre-registration
• Complete baby gear shopping and setup
• Take a hospital tour and birth classes
• Begin freezing meals for postpartum

Weeks 34-36: Final Preparations

• Pack hospital bags completely
• Install and inspect the car seat
• Complete birth plan discussions
• Organize emergency information

Weeks 37-39: Ready Position

• Confirm all appointments and plans
• Practice labor techniques and positions
• Finalize childcare and pet care arrangements
• Rest and prepare mentally

Week 40+: Delivery Readiness

• Daily check-ins with a healthcare provider
• Keep your phone charged and bags accessible
• Maintain normal activities as able
• Trust your body and preparation

Common Third Trimester Concerns Addressed

Physical Discomfort Management:

• Sleep challenges: Body pillow support, frequent position changes
• Back pain: Prenatal massage, gentle stretching, supportive shoes
• Swelling: Elevate feet, stay hydrated, monitor for sudden changes
• Braxton Hicks contractions: Practice breathing, change positions

Emotional Preparation:

• Anxiety about labor: Knowledge reduces fear – take classes, read evidence-based information
• Parenting concerns: Normal feelings – connect with other parents, read reputable resources
• Relationship changes: Communicate openly with your partner about fears and expectations
• Work transition stress: Plan gradually, communicate clearly with employers

Practical Concerns:

• Financial worries: Create realistic budgets, explore community resources
• Time management: Prioritize essential tasks, accept help from others
• Decision fatigue: Make important decisions early, delegate smaller choices

Conclusion

Completing this third trimester checklist positions you for a confident, prepared birth experience. Research consistently shows that prepared parents report higher satisfaction with their birth experience and smoother postpartum transitions.

Key Success Factors:

• Start early: Begin preparations around week 28
• Stay organized: Use this checklist systematically
• Communicate clearly: Keep all team members informed
• Remain flexible: Plans may change – that’s normal and okay
• Trust yourself: You’re more prepared than you think

Remember that every pregnancy and birth experience is unique. This third trimester checklist provides a comprehensive foundation, but trust your instincts and your healthcare provider’s guidance for your specific situation.

Your journey to parenthood represents months of growth, preparation, and anticipation. By following these 25 expert steps, you’re creating the best possible foundation for welcoming your baby and beginning this incredible new chapter of your life.

Take pride in your preparation, trust in your strength, and look forward to meeting the little person you’ve been preparing so carefully to welcome home.