What Happens In The 1st Pregnancy Appointment With The Gynecologist - Paraice Magazine : women's fashion, beauty, cooking magazine Pregnancy is not a disease. Nevertheless, a medical check-up is very useful to make sure that you and your unborn baby are doing well until the birth. The first prenatal consultation usually takes place between the 8th and 12th week of amenorrhea, or the 2nd half of the 1st trimester. It allows, above all, to clinically confirm the existence of the pregnancy and to obtain an official declaration.