Height of Fundus
The pregnant body is truly amazing when you sit back and look at how much give and take it goes through during those nine months. At the beginning of your pregnancy, your uterus is about the size of your fist. It begins to enlarge at 8-12 weeks. Your doctor or midwife will begin to measure your uterus at your three month prenatal appointment and will continue measuring its growth at every appointment after that one.
The measurement your doctor or midwife is recording is the height of the fundus. The top of the uterus is called the fundus. The fundus is measured in relation to your pubic bone. Doctors and midwives use this measurement to make sure that your baby's growth is on target for your estimated due date. The height of the fundus also will tell a doctor or midwife if your baby is growing at a normal or adequate rate.
About one in five expectant mothers have what is referred to as a tilted or retroverted uterus in which the fundus is tilted towards the back instead of the front. In most pregnancies the uterus will right itself by the end of the first trimester. In rare cases when it doesn't, and where it becomes lodged in the pelvis putting pressure on the bladder, a catheter may need to be inserted to drain the mother's urine and then the uterus is gently pushed back into the proper position.