Your baby at 30 weeks
The brain and nervous system continue developing. The baby gains weight and the skin becomes less wrinkled.
The lungs are still maturing. Movements should continue in their usual pattern.
TRIMESTER 3 · WEEK 30
30 weeks pregnant
Getting ready, little by little.
What to expect at 30 weeks pregnant: your baby, your symptoms and this week’s reminders.
Symptoms at 30 weeks pregnant
- Sleep may become more difficult.
- Heartburn or constipation may continue.
- You may notice pelvic discomfort.
None of these symptoms is required. Symptoms alone cannot diagnose pregnancy or establish your baby’s wellbeing.
Try comfortable positions for rest and discuss persistent discomfort with your clinician.
Source for this week: NHS — Week 30
Measurement note: early lengths are head-to-bottom; from week 20 they are head-to-heel. The numbers across that change should not be compared as if the measurement method were the same.
YOUR WEEK, YOUR JOURNEY
Explore another pregnancy week
Choose a week to explore your baby’s development and changes you may notice.
01 · FIRST TRIMESTERSmall beginnings
02 · SECOND TRIMESTERA growing connection
03 · THIRD TRIMESTERGetting closer to meeting
Sources and content note
This is source-based general information, not a substitute for a clinical assessment or individual care plan. The presence, absence or change of symptoms alone cannot establish pregnancy wellbeing. This content is not a personalised care plan reviewed by a healthcare professional.
This guide groups weeks 1–13 in the first trimester, 14–27 in the second, and 28 onwards in the third. Weeks refer to gestational age dated from the last menstrual period; clinical dating may differ.
- NHS — Pregnancy week by week
- ACOG — Fetal development and gestational age
- NHS — Your baby’s movements
- NHS — Pregnancy symptoms
Sources checked: 31 October 2026 · Illustrations are AI-generated conceptual drawings, not ultrasound or diagnostic images.