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The third trimester — roughly week 28 to birth — is when pregnancy starts to feel physically demanding in new ways, and preparation for labor and a newborn becomes much more concrete.
What's happening physically
The baby's rapid weight gain during this stage often brings new discomforts: back pain, shortness of breath as the uterus presses on the diaphragm, swelling, and more frequent urination as the baby drops lower.
Appointments become more frequent
- Visits typically shift to every 2 weeks around 28–36 weeks, then weekly until delivery.
- A Group B strep test, usually around 36 weeks.
- Continued monitoring of blood pressure and fetal position as delivery approaches.
Common third-trimester discomforts
- Braxton Hicks contractions — irregular "practice" tightening, usually not painful.
- Swelling in the feet and ankles, especially by end of day.
- Difficulty sleeping comfortably as the belly grows.
- Increased fatigue as the body works harder to support both mother and baby.
Getting ready for labor
Many people use this window to pack a hospital bag, finalize a birth plan, and set up basic newborn essentials at home — practical tasks that also help with the psychological shift toward delivery.
Frequently asked questions
Is it normal to feel short of breath in the third trimester?
Yes, mild shortness of breath is common as the growing uterus reduces lung capacity slightly. Sudden, severe shortness of breath is different and should be checked promptly.
When should I pack my hospital bag?
Many people aim to have it ready by around 36 weeks, since labor can start earlier than the due date. There's no strict rule — just a reasonable buffer before your estimated due date.
