Normal Pregnancies usually lasts 280 days after LMP.

LMP: Last Menstrual period

The way we calculate gestational age is decreasing 3 months and adding 7 days to LMP.

Heart will be created in 4th weeks of gestation for the first time

Lymphatic nodes will be created in 5th weeks of gestation

24 weeks Fetal, weights 630gr

28 weeks fetal weights 1100gr

32 weeks fetal weights 1800 gr

36 weeks fetal weights 2500gr

Fetus sex will be identified in 14 weeks of gestation by sonography

Fetal spontaneous movement will be begun in 12 weeks of gestation

From 20th weeks of gestation, fetus will have movement each minute

We inject prophylactic 1mg(0.5 cc) vitamin K (deep IM) after child birth