Pregnancy checkup schedule Pregnancy is a very special period. In addition to postpartum care, pregnant women need to undergo some physiological checks to ensure the safety of themselves and their fetuses. The pregnancy check-up schedule is as follows: First trimester (1-12 weeks) In the first trimester, pregnant women need to have at least 2-3 prenatal check-ups to find out whether there are any pregnancy complications. In addition, pregnant women can also undergo amniocentesis