20 Weeks Pregnant
Summary
Size
banana
Length
25.6 cm
Weight
300 g
Until due date
20 weeks
20 / 40 week
%50
What's Happening With Your Baby
You're halfway there. The baby has developed regular sleep-wake cycles. Meconium is accumulating in the intestines. Measurements are now taken head to heel.
What's Changing For You
Your uterus has reached the level of your navel. Movements feel more distinct. Heartburn may start as the uterus presses on your stomach.
To Do This Week
You can have your anatomy scan this week — the sex usually becomes clear too.
For heartburn, eat dinner early and raise your head when you lie down.
Start looking into antenatal classes; the popular ones fill up early.
Frequently Asked Questions
How many months is 20 weeks pregnant?
Week 20 of pregnancy falls in month 5 and in the second trimester. Pregnancy months don't run in neat four-week blocks, so the week-to-month conversion rarely lands on a whole number — which is why pregnancy is tracked in weeks.
How big is the baby at 20 weeks?
At 20 weeks your baby is roughly the size of a banana: around 25.6 cm long and 300 grams. These are averages; clear variation between babies is normal, and what matters is the growth curve your doctor is tracking.
How long is left at 20 weeks pregnant?
Assuming a 40-week pregnancy, you have around 20 weeks left at week 20. Most births happen between weeks 37 and 42, so a due date is a range rather than a fixed day.
What should I watch out for at 20 weeks?
You can have your anatomy scan this week — the sex usually becomes clear too. For heartburn, eat dinner early and raise your head when you lie down. Start looking into antenatal classes; the popular ones fill up early.
Track your pregnancy week by week
Baby Wallie brings your baby's weekly development, your health logs and AI-powered nutrition, sleep and breathing programs into one app. Free for 7 days.
Related Guides
When To Seek Care Immediately
Whatever week you are in, contact your doctor or the nearest health facility without waiting if you have: vaginal bleeding or fluid loss, severe persistent abdominal pain, a severe headache, blurred vision or flashing lights, sudden swelling of the hands or face, a fever above 38 °C, burning on urination with fever, persistent vomiting, fainting, or — after week 28 — a clear reduction in your baby's movements. In these situations reach real medical care rather than an app or a web search.
This content is for informational purposes only and does not replace medical advice. Always consult your doctor or midwife about your own or your baby's health.