Since the day before yesterday I have been having horrible sharp pains in my bottom, front and back, and my lower abdomen, it just feels like this horrible pressure, or heaviness. Also, my lower back started hurting last night, not really just usual third trimester back pain, but like menstrual back pain. I was about 1 cm when I saw my doc this past Wednesday and I go again this coming Wednesday for a growth scan because I have been measuring about 2 weeks ahead the whole time. Should I be having such bad pains, is it normal?