Uterous

The uterus has three major functions: to prepare a bed for a fertilized ovum, to nourish the developing embryo during pregnancy, and to expel the fetus. Shaped like an upside-down pear, and tilted forwards, it lies within the pelvis and is held in place, along with its two extensions, the Fallopian tubes, by ligaments and folds of the peritoneum. The cervix forms the lower third, connected by a narrow isthmus to the main muscular body of the uterus. The non-pregnant uterus weighs 45–60 g and is 7–8 cm long but its weight increases more than ten-fold by the end of pregnancy.

Pregnancy maintenance

Getting pregnant is not sufficient. we define a success, not by pregnancy, but by having a healthy baby and a healthy mom. So in order to have a healthy baby, we need to first make sure we maintain a pregnancy. The highest chance for pregnancy loss is before a fetal heart beat is detected. After that, chances are pretty good that you will carry to term. However, there are many issues besides fetal loss that need to be considered.