Week 21 of Pregnancy
Second trimester
For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
Baby is
about the size of a carrot
10.5 inches · 12.7 oz
Baby this week
- •Baby can now swallow and is beginning to practice digestion with amniotic fluid
- •Eyebrows and eyelids are fully formed
- •Baby's movements are becoming more coordinated and you may feel distinct kicks and rolls
- •Taste buds are developing and baby can taste flavors from your diet through amniotic fluid
You this week
- •Increased appetite and food cravings (or aversions)
- •Round ligament pain as uterus expands (sharp pains on sides of belly)
- •Occasional Braxton Hicks contractions (practice contractions)
- •Possible linea nigra (dark line down belly) and skin darkening
- •Continued fatigue despite being past first trimester
This week's tips
- •Schedule your anatomy ultrasound (20-22 week scan) if you haven't already—this is an exciting milestone
- •Practice pelvic floor exercises daily to support your growing belly and prepare for labor
- •Stay hydrated and eat regular, balanced meals to support your increased caloric needs
- •Invest in supportive, comfortable maternity clothes—you're at the point where regular clothes likely feel restrictive
- •If you experience sharp round ligament pain, try changing positions slowly and applying heat
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
You're officially past the halfway point! The next few weeks bring more pronounced movements and continued growth. By week 24, your baby will be considered viable outside the womb, though still needing significant medical support.
Track your pregnancy on BringBaby
Join free to track your pregnancy week-by-week and find baby-friendly places to visit as baby grows.
For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
This content is for informational purposes only and is not medical advice. Every pregnancy and baby is different. Always consult your doctor, midwife, or pediatrician for guidance specific to your situation.
More free tools
Looking for places to bring baby?
Explore BringBaby