Week 6 of pregnancy — 1st trimester. Baby is the size of a lentil 🫘, approximately 0.5cm long. Heartbeat detectable by transvaginal ultrasound (~100-160 bpm). 15% of the 40-week journey complete, 34 weeks remaining.
PREGNANCY WEEK 6 — 1st TRIMESTER
🫘
lentil
baby is about the size of a lentil
WEEK
6
of 40
LENGTH
0.5cm
crown to rump
WEIGHT
tiny
approximate
34 weeks remaining · Heartbeat detectable by transvaginal ultrasound (~100-160 bpm).
WEEK 6 — BABY'S DEVELOPMENT
1ST TRIMESTER · Weeks 1–12
Heartbeat detectable by transvaginal ultrasound (~100-160 bpm).
HOW YOU MAY FEEL
Morning sickness peaks for many. Fatigue, bloating, mood swings common.
WEEK 6 KEY FACTS
Gestational age
Week 6
Trimester
1st (T1)
Baby length
0.5cm
Baby weight
tiny
Progress
15% complete
Weeks left
34 weeks
What happens at week 6 of pregnancy?
At week 6 of pregnancy (1st trimester):\n\nBaby development: Heartbeat detectable by transvaginal ultrasound (~100-160 bpm).\n\nBaby size: lentil 🫘\nLength: approximately 0.5cm (crown to rump)\nWeight: approximately too small to measure\n\nPregnancy progress: 15% complete (34 weeks remaining)\n\nGestational age is counted from the first day of your last menstrual period (LMP), not from conception. Week 6 begins on day 36 and ends on day 42 from your LMP.
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Pregnancy week 6 · 1st trimester · Baby size: lentil 🫘 · 0.5cm · tiny · Sources: ACOG, WHO fetal growth data