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Pregnancy Week 27: Symptoms, Baby Size & What to Expect

PregnancyBy Wermom Medical TeamUpdated March 20268 min read
Pregnancy Week 27: Symptoms, Baby Size & What to Expect
Quick Answer: At week 27 of pregnancy, your baby is about the size of a head of cauliflower and weighs approximately ~875g. Here's everything happening this week — from your baby's development to the symptoms you might experience, plus expert tips to help you through.

Your Baby at Week 27

Your baby measures roughly the size of a head of cauliflower (14.4 in) and weighs about ~875g. The major developments this week: Regular sleep/wake cycles establishing, can hiccup (you may feel rhythmic movements), lungs continuing to mature.

Your baby now has regular sleep and wake cycles — you may notice patterns of activity and rest. When baby sleeps, movements decrease; this is completely normal.

Pregnancy Week 27: Symptoms, Baby Size & What to Expect guide

Symptoms at Week 27

Common symptoms during week 27 of pregnancy include: Third trimester approaching, fatigue returning, restless leg syndrome, itchy belly skin, swelling, shortness of breath.

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.

What to Do This Week

Welcome to the home stretch — third trimester begins next week. Start preparing your hospital bag, install the car seat, and finalize your birth plan.

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 27?

Yes, most symptoms at week 27 are completely normal. Common experiences include Third trimester approaching and fatigue returning. 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 27 weeks?

At week 27, your baby is approximately the size of a head of cauliflower, weighing about ~875g. Regular sleep/wake cycles establishing.

What should I avoid at week 27 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.

Key Takeaways

  • At week 27, your baby is the size of a head of cauliflower (~875g)
  • Key development: Regular sleep/wake cycles establishing
  • Common symptoms: Third trimester approaching, fatigue returning, restless leg syndrome
  • Welcome to the home stretch — third trimester begins next week.
  • Track your symptoms and baby's movements with Wermom for personalized insights

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