We have made it easier to understand the follow up needed in your pregnancy. Your pregnancy care timeline Follow Ups: Follow up appointments are usually every 4 weeks until you reach 28 weeks gestation, then every two weeks until 36 weeks gestation, then every week until delivery. You may request an extra follow up appointment any time as needed by calling our clinic or requesting a follow up appointment online by clicking here . Estimated Delivery Date: Your estimated date of delivery will be calculated after your first trimester ultrasound. This is a date that corresponds to 40 weeks gestation and does not change throughout the pregnancy. Ultrasounds: An ultrasound to determine your estimated date of delivery is usually requested in your first trimester (Dating ultrasound). To assess fetal anatomy, an anatomy ultrasound is performed between 18-20 weeks gestation. An additional ultrasound for fetal growth assessment may be required around 30 weeks gestation. Additional or more frequent ultrasounds may be requested throughout the pregnancy for various other monitoring reasons. Screening Screening in pregnancy is done to evaluate the risk of chromosomal abnormalities in the fetus. This consists of a combination of blood work and an ultrasound between 11 and 13.6 weeks. Apps and pregnancy trackers There are several apps you may use to track your pregnancy and learn more information about pregnancy care. We recommend the OMama website and app as a trusted resource. You may find it by clicking on this link www.omama.com