The digital rays, which become fingers, are notched. Toe rays are present on the feet. Before pregnancy, your uterus was about the size of your fist. After 6 weeks of growth, it is about the size of a grapefruit. As the uterus grows, you may feel cramping or even pain in your lower abdomen or your sides.
Some women feel tightening or contractions of the uterus.
The uterus tightens or contracts throughout pregnancy. If you don't feel this, don't worry. However, when contractions are accompanied by bleeding from the vagina, consult your physician. Many women experience an occasional excruciating pain in their buttocks and down the back or side of their legs as pregnancy progresses. This is called sciatic-nerve pain.