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Pregnancy Week 7: Symptoms, Baby Size & What to Expect

PregnancyBy Wermom Medical TeamUpdated March 20268 min read
Pregnancy Week 7: Symptoms, Baby Size & What to Expect
Quick Answer: At week 7 of pregnancy, your baby is about the size of a blueberry and weighs approximately ~1g. 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 7

Your baby measures roughly the size of a blueberry and weighs about ~1g. The major developments this week: Brain growing rapidly (100 new brain cells per minute), arm buds developing hands, kidneys forming.

Your baby's brain is producing about 100 new cells every single minute this week.

Pregnancy Week 7: Symptoms, Baby Size & What to Expect guide

Symptoms at Week 7

Common symptoms during week 7 of pregnancy include: Fatigue intensifying, morning sickness peaks, excess saliva, food cravings, mild headaches, skin changes.

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

Rest when you can — your body is working incredibly hard building a human. If nausea prevents eating, try BRAT diet (bananas, rice, applesauce, toast).

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 7?

Yes, most symptoms at week 7 are completely normal. Common experiences include Fatigue intensifying and morning sickness peaks. 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 7 weeks?

At week 7, your baby is approximately the size of a blueberry, weighing about ~1g. Brain growing rapidly (100 new brain cells per minute).

What should I avoid at week 7 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 7, your baby is the size of a blueberry (~1g)
  • Key development: Brain growing rapidly (100 new brain cells per minute)
  • Common symptoms: Fatigue intensifying, morning sickness peaks, excess saliva
  • Rest when you can — your body is working incredibly hard building a human.
  • Track your symptoms and baby's movements with Wermom for personalized insights

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