Third Trimester Guide: Weeks 28-40
The final stretch of your pregnancy journey. Your baby is preparing to meet you, and it's time to prepare for birth and life with your newborn.
Medical Disclaimer
This content is for informational purposes only and is not intended as medical advice. Every pregnancy is unique. Always consult your healthcare provider, OB-GYN, or midwife for personalized medical guidance. If you have concerns about your pregnancy, contact your healthcare provider immediately.
In This Guide
The third trimester marks the home stretch of your pregnancy, spanning from week 28 until delivery around week 40. During these final weeks, your baby gains significant weight, their brain develops rapidly, and their lungs mature in preparation for life outside the womb.
While you may feel more physically uncomfortable as your belly grows, this is also an exciting time of anticipation and preparation. From packing your hospital bag to finalizing your birth plan, there's much to do before your little one arrives.
Preparing for Birth
The third trimester is all about preparation. While your body naturally prepares for labor, there are many practical steps you can take to feel ready for the big day.
Physical Preparation
- •Take childbirth education classes
- •Practice breathing and relaxation techniques
- •Continue gentle exercise (walking, swimming)
- •Do perineal massage (starting around week 34)
- •Practice pelvic floor exercises
Practical Preparation
- •Tour the hospital or birth center
- •Pre-register at your delivery location
- •Install the car seat (have it checked)
- •Pack your hospital bag by week 36
- •Plan your route to the hospital
Third Trimester Timeline
Month 7 (Weeks 28-31)
Baby's brain is developing rapidly, and they're practicing breathing. Start childbirth classes, finalize your nursery, and consider your birth preferences. Appointments increase to every two weeks.
See week 28 details →Month 8 (Weeks 32-35)
Baby is gaining about half a pound per week. Pack your hospital bag, complete your birth plan, and ensure everything is ready at home. Baby may "drop" into the pelvis (lightening).
See week 32 details →Month 9 (Weeks 36-40)
Weekly appointments begin. Baby is considered full-term at 39 weeks. Watch for signs of labor, stay close to home, and rest when you can. Your baby could arrive any day!
See week 40 details →Hospital Bag Checklist
Pack your hospital bag by week 36 so you're ready when labor starts. Here are the essentials to include:
🤱 For Mom
- • ID and insurance cards
- • Birth plan (multiple copies)
- • Comfortable robe and slippers
- • Nursing bras and pads
- • Going-home outfit (maternity-sized)
- • Toiletries and hair ties
- • Phone charger and entertainment
- • Snacks for after delivery
- • Lip balm (labor rooms are dry)
👶 For Baby
- • Going-home outfit (2 sizes just in case)
- • Warm blanket for car ride
- • Car seat (installed and inspected)
- • Baby hat or headband
- • Optional: special swaddle or outfit for photos
🤝 For Partner
- • Change of clothes
- • Toiletries
- • Snacks and cash for vending
- • Phone charger
- • Camera or video camera
- • Pillow and blanket for sleeping
📋 Important Documents
- • Photo ID
- • Insurance cards
- • Hospital pre-registration forms
- • Birth plan copies
- • Pediatrician's contact info
- • Emergency contact list
Birth Plan Creation
A birth plan communicates your preferences to your healthcare team. While flexibility is important (births don't always go as planned), having a plan helps ensure your voice is heard.
Topics to Address
- •Pain management: Epidural, natural methods, or combination
- •Movement: Walking during labor, positions for delivery
- •Monitoring: Continuous vs. intermittent fetal monitoring
- •Interventions: Preferences for induction, episiotomy
- •Delivery: Who cuts the cord, delayed cord clamping
After Delivery Preferences
- •Skin-to-skin: Immediate contact after birth
- •Feeding: Breastfeeding, formula, or combination
- •Newborn procedures: Vitamin K, eye ointment, vaccines
- •Circumcision: If applicable
- •Rooming in: Baby staying in room vs. nursery
Tips for Your Birth Plan
- • Keep it to one page if possible
- • Discuss with your provider ahead of time
- • Remain flexible - priorities may change during labor
- • Bring multiple copies to the hospital
- • Make sure your partner knows your wishes
Labor Signs to Know
As your due date approaches, it's important to recognize the signs that labor is beginning. While every birth is different, here are the key signals to watch for:
Early Signs (Days/Weeks Before)
- •Baby drops: Lower belly, easier breathing
- •Increased Braxton Hicks: Practice contractions intensify
- •Cervical changes: Dilation and effacement begin
- •Mucus plug: Thick discharge (bloody show)
- •Nesting urge: Sudden burst of energy
Active Labor Signs (Call Provider)
- •Regular contractions: Getting closer together
- •Water breaking: Gush or trickle of fluid
- •Back labor: Intense lower back pain
- •Contractions don't stop: With rest or position change
The 5-1-1 Rule
Call your provider or go to the hospital when contractions are:
Minutes apart
Minute long each
Hour of this pattern
Note: If this is not your first baby, you may need to go sooner as labor often progresses faster. Always follow your provider's specific instructions.
The Nesting Instinct
Many women experience an overwhelming urge to clean, organize, and prepare their home in the weeks before delivery. This "nesting instinct" is completely normal and may be nature's way of preparing you for your new arrival.
Common Nesting Behaviors
- •Deep cleaning the house
- •Organizing closets and drawers
- •Washing and folding baby clothes
- •Stocking up on supplies
- •Meal prepping and freezing food
Safety Reminders
- •Avoid climbing on ladders or stools
- •Don't overexert yourself
- •Ask for help with heavy lifting
- •Use non-toxic cleaning products
- •Take breaks and stay hydrated
Final Appointments
In the third trimester, prenatal appointments become more frequent to monitor you and baby closely as delivery approaches.
Weeks 28-36: Every 2 Weeks
Routine checks include blood pressure, weight, fundal height, and baby's heartbeat. You'll have a glucose screening test and Rh antibody test if needed. Group B strep test happens around week 36.
Weeks 36-40: Weekly
Weekly appointments begin. Provider may check cervical dilation and baby's position. Discuss signs of labor, when to go to the hospital, and any remaining questions about delivery.
Week 40+: Monitoring
If you pass your due date, you may have additional monitoring including non-stress tests and ultrasounds to check amniotic fluid. Your provider will discuss options if baby hasn't arrived by 41-42 weeks.
Questions to Ask at Final Appointments
- • When should I come to the hospital/call you?
- • Is baby in the right position for delivery?
- • What are your policies on induction?
- • How can I reach you after hours?
- • What should I do if my water breaks?
Postpartum Preparation
While it's natural to focus on the birth, preparing for the postpartum period is equally important. The "fourth trimester" brings its own challenges and joys.
Practical Preparations
- •Prep and freeze meals for after baby arrives
- •Stock up on postpartum supplies (pads, peri bottle, etc.)
- •Set up a comfortable nursing/feeding station
- •Arrange help for the first few weeks if possible
- •Choose and meet with a pediatrician
Emotional Preparation
- •Learn about "baby blues" vs. postpartum depression
- •Set realistic expectations for recovery
- •Build your support network before baby arrives
- •Plan how to limit visitors if needed
- •Know the signs to seek help for mental health
💡 Postpartum Recovery Kit
Stock up on these items before baby arrives:
When Baby is Overdue
Only about 5% of babies arrive on their actual due date. It's completely normal to go past your due date, especially with first pregnancies. However, monitoring increases to ensure baby remains healthy.
What to Expect After 40 Weeks
- •More frequent appointments (possibly daily)
- •Non-stress tests to monitor baby
- •Ultrasounds to check amniotic fluid
- •Discussion of induction options
Natural Ways to Encourage Labor
(Discuss with your provider first)
- •Walking and staying active
- •Nipple stimulation
- •Sexual activity (if water hasn't broken)
- •Membrane sweep (done by provider)
About Induction
Most providers recommend induction between 41-42 weeks to reduce risks associated with prolonged pregnancy. Induction methods include medications to ripen the cervix, breaking the water, or Pitocin to start contractions. Your provider will discuss the best approach for your situation.
Explore Third Trimester Week by Week
Second Trimester Guide
Weeks 13-27
Related Guide →Hospital Bag Checklist
Complete packing guide
Disclaimer
This content is for informational purposes only. Pregnancy information is general guidance and may not apply to your specific situation. Consult a healthcare provider for personalized advice.