Week 8 · 1st trimester

Pregnancy Week 8: What to Expect

Baby's development, your body's changes, common symptoms, what to eat, and what to do this week.

Baby's size this week: Raspberry (~16 mm)

Baby's development at week 8

Baby's hands and feet are forming — fingers and toes are still webbed but separating. The "tail" from earlier development has disappeared. The heart now has four chambers and valves are forming. Baby has the beginnings of lungs (bronchi branching), liver, and kidneys, all working in primitive forms. Baby moves spontaneously now, but you cannot feel it yet — too small. The neural tube is fully closed, and baby's brain has divided into its three main parts. Eyelids form over the eyes but stay fused shut for a while longer.

What's happening in your body

Your uterus is now about the size of a tennis ball. You may feel pulling or stretching in the lower abdomen (round ligament pain) as the uterus expands. Progesterone slows digestion, which causes constipation and reflux. Blood volume is up about 20% from pre-pregnancy. Cervical mucus has thickened into the protective plug. Many people notice clearer or worse skin (the "pregnancy glow" or breakouts — both are hormone-driven and normal).

Common symptoms at week 8

Morning sickness continues, often peaking this week. Constipation as digestion slows. Increased vaginal discharge (white, milky, mild smell — normal). Round ligament twinges in the lower abdomen, especially when standing up or stretching. Bloating that makes pants tight (the bump is not visible yet, but the bloat is). Fatigue. Breast tenderness, with possible darker veins visible. Some people notice a stronger "metallic taste" in their mouth.

When to call your provider

Severe one-sided pain that does not ease, heavy bleeding, or shoulder-tip pain — call your provider, ectopic pregnancy symptoms can still appear this week. Severe headache, vision changes, or unusual swelling are very rare this early but worth mentioning if they happen.

How to feel better this week

Your first prenatal visit usually happens between weeks 8-10. Bring a list of questions (medications, exercise, travel, work, food rules). Bring the date of your last menstrual period. Be ready for a Pap smear, urine sample, bloodwork (blood type, Rh factor, immunity to certain infections), and possibly an ultrasound to confirm dates and heartbeat. Drink plenty of water for the appointment. Eat fiber and prunes for constipation; do not strain. Magnesium glycinate or a stool softener (talk to provider) help if fiber alone is not enough.

Nutrition focus for week 8

Aim for 25-30 grams of fiber daily — oats, beans, vegetables, fruits with skin, whole grains. Stay hydrated; constipation worsens fast when you are dehydrated. Foods rich in vitamin D (fatty fish, fortified milk, eggs) and calcium (dairy, broccoli, kale, almonds) support baby's developing bones, though most bone development happens later. Aim for 1000 mg calcium daily.

For your partner

Come to the first prenatal visit if you can. Hearing the heartbeat together is powerful, and providers often share next steps and what to watch for — having two pairs of ears helps. Take notes during the visit.

This week's to-do

Attend the first prenatal appointment. Bring your last menstrual period date and a list of questions. Stay hydrated; eat fiber.

Is this normal?

It is normal to feel a strange mix of excitement and fear after the first appointment. Pregnancy is a real medical condition with real risks, and a good provider will mention things to watch for. That does not mean those things will happen.

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Medical disclaimer: This content is for general educational purposes only and is not a substitute for medical advice. Always talk to your healthcare provider about your specific pregnancy. If you have concerning symptoms, do not wait — call your provider or go to the emergency department.