Respect the periods advised by your doctor

Usually routine exams are performed at 12, 22 and 32 weeks of amenorrhea (absence of menstrual periods), but of course certain situations may lead to perform these exams more often or at different dates.

Complementary examens and further controls may be suggested to you. If there is, in your family, a child or an adult having a malformation, even unimportant, do not hesitate to indicate it.