Does it hurt for a woman to give birth naturally?

It is very painful for a woman to give birth naturally. Such pain usually reaches the highest level of pain, which is very unbearable, because if the first child is born, it usually hurts for 11 to 20 hours. This process is to let the uterus contract, and then the uterus can slowly expand, expand to ten centimeters, the fetus can be born, so this is a very long and painful process, of course, medical science has painless childbirth, when the patient in abdominal pain, can be injected at the bottom of the waist anesthesia-like words, can alleviate the pain.