Pain during labor is caused by contractions of the muscles of the uterus and by pressure on the cervix. This pain can be felt as strong cramping in the abdomen, groin, and back, as well as an achy feeling. Some women experience pain in their sides or thighs as well.
Other causes of pain during labor include pressure on the bladder and bowels by the baby's head and the stretching of the birth canal and vagina.
Modern research has indicated that prenatal massage therapy can be very beneficial during pregnancy and should be considered a vital part of a prenatal health program. You can feel all kinds of aches and pains when you are pregnant.
The extra weight you are carrying creates major changes in your body, especially the added stress on your abdominal muscles, shoulders, neck & back.