Chart this as a normal finding This is a normal finding. After 36 weeks of pregnancy, the fundal height will regress. Remember at 36 weeks the fundus will be at the xiphoid process. However, the fundus of the uterus will decrease about 4 cm from the xiphoid process at about 37-40 weeks of pregnancy. WHY? the baby has settled down into the pelvic cavity and preparing for delivery.