I'm about too be 40 weeks Wednesday. I've had back pains this whole pregnancy. But I woke up this morning too get my bf up for work and I normally go back too sleep afterwards. But my back has been in sooo much pain I can't sleep it's been about 2 hrs. It hurts too move around in bed too try and get comfortable even my upper legs hurt when moving or trying too move atleast. I'm layin on a pillow right now might help a little but I still,can't go back too sleep and normally I have no problem goin,back too bed even with the back pain but this is awful. How do I know if it's back contractions or jus back pain?