Baby development at week 7
Arm and leg buds lengthen. Eye and ear places become more defined, and the brain continues rapid growth. The embryo is still measured in millimeters.
Average size estimates for week 7 are about 1.0 cm and too early to weigh meaningfully — roughly blueberry. Your ultrasound report and clinician’s dating override any website average.
What you might feel
You might notice tighter clothes at the waist even without a visible bump, plus stronger smell sensitivity.
You are in the first trimester. Two pregnancies at the same week can feel completely different — treat these notes as orientation, not a checklist you must match.
What to track this week
- Symptoms, mood, sleep, and energy in your daily log
- Water intake toward a simple daily goal
- Appointment dates and questions for your care provider
A calm next step in Preglo
Save appointment questions in Preglo notes so you do not forget them in the exam room.
Also useful: due date calculator · all weeks · Preglo features
Nearby weeks: Week 5 · Week 6 · Week 8 · Week 9
Educational averages only — not medical advice. Contact your clinician for symptoms that worry you, bleeding, severe pain, or reduced movements.