First Trimester
Pregnancy Week 7
Your baby is about the size of a blueberry 🫐 — brain growing rapidly.
🫐
Size comparison
≈ Blueberry
Length
1 cm
Weight
1 g
Milestone
Brain growing rapidly
About 33 weeks to go until your due date (week 40).
Baby's development at week 7
The brain is growing at nearly 100 new cells per minute. Arm and leg buds are elongating. The umbilical cord is fully functional, delivering oxygen and nutrients.
Stay hydrated — dehydration worsens nausea significantly.
Common symptoms at week 7
NauseaExcessive salivaBloatingBreast enlargement
Eat more of
- ✓Folic acid (leafy greens, fortified cereals)
- ✓Iron-rich foods (lentils, spinach)
- ✓Calcium (dairy, fortified plant milk)
- ✓Vitamin B6 (bananas, avocados)
- ✓Whole grains
Foods to avoid
- ✕Alcohol
- ✕Raw/undercooked meat or fish
- ✕High-mercury fish (shark, swordfish)
- ✕Unpasteurised dairy
- ✕Excess caffeine (>200 mg/day)
- ✕Raw sprouts
Medically reviewed by First OPD Medical Team. Last reviewed on .
Based on average milestones from World Health Organization (WHO), ACOG, NHS UK. Educational only — not a substitute for personalised medical advice.
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