Answer: Your sciatic nerve is a long nerve that runs from your lower back all the way down to your feet. When pain occurs along this nerve, the condition is known as sciatica. Many women experience sciatica during pregnancy because the enlarged uterus presses down on the sciatic nerve. This increased pressure causes pain, tingling, or numbness in the lower back, buttocks, and thighs. It may affect one side or both sides of the body. While the pain of sciatica is uncomfortable, it shouldn’t hurt your growing baby. You may be able to ease the pain by stretching, taking a warm bath, or using pillows to position yourself as comfortably as possible.