6 weeks pregnant

6 weeks is about 1.4 months of gestation, counted from the first day of your last period. You are in the first trimester.

Around 4–6 mm long and < 1 g, roughly the size of a lentil. These are averages; individual babies vary.

Trimester 1 · about 1 month · baby is about the size of a lentil.

Baby at 6 weeksa lentil4–6 mm · < 1 g

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Your baby this week

Cardiac activity can often be seen on a transvaginal ultrasound. Buds for arms and legs appear.

Nausea often starts between weeks 6 and 8.

How many months is 6 weeks pregnant?

6 weeks is about 1.4 months of gestation, counted from the first day of your last period. You are in the first trimester.

How big is a baby at 6 weeks?

Around 4–6 mm long and < 1 g, roughly the size of a lentil. These are averages; individual babies vary.

Not sure which week you're in? The pregnancy calculator works it out from your last period or due date.