Pregnancy Week 21: Symptoms, Baby Size & What to Expect

Your Baby at Week 21

Your baby measures roughly the size of a banana (10.5 in) and weighs about ~360g. The major developments this week: Movements becoming stronger and coordinated, eyebrows visible, taste buds working — baby can taste amniotic fluid.

Your baby can now taste what you eat through the amniotic fluid — studies show flavor preferences may develop in the womb.

Symptoms at Week 21

Common symptoms during week 21 of pregnancy include: Visible baby movements from outside, Braxton Hicks contractions may start, varicose veins, stretch marks expanding.

Remember that every pregnancy is unique — you may experience all, some, or none of these symptoms. If anything feels unusual or concerning, don't hesitate to contact your healthcare provider.

📖 Also read: Morning Sickness Diet Foods | Pregnancy Week 33 Guide

What to Do This Week

You're past the halfway point! Start researching pediatricians now — you'll want one chosen before delivery. Ask friends for recommendations and schedule meet-and-greet appointments.

Nutrition & Wellness

Staying well-nourished is crucial at every stage of pregnancy. Focus on folate-rich foods (leafy greens, lentils, fortified cereals), iron (lean meats, beans, spinach), calcium (dairy, fortified plant milks), and omega-3 fatty acids (salmon, walnuts, flaxseed). Stay hydrated with at least 8-10 glasses of water daily.

Frequently Asked Questions

Is it normal to feel [symptom] at week 21?

Yes, most symptoms at week 21 are completely normal. Common experiences include Visible baby movements from outside and Braxton Hicks contractions may start. However, contact your doctor if you experience severe pain, heavy bleeding, or persistent vomiting that prevents you from keeping fluids down.

How big is my baby at 21 weeks?

At week 21, your baby is approximately the size of a banana, weighing about ~360g. Movements becoming stronger and coordinated.

What should I avoid at week 21 of pregnancy?

Continue avoiding alcohol, raw/undercooked meats and fish, unpasteurized dairy, high-mercury fish (shark, swordfish, king mackerel), deli meats unless heated until steaming, and limit caffeine to under 200mg per day.