Im 33 weeks and 5 days pregnant. Last night me and my parnter had sex, i wasnt in any pain through out or straight after. but about an hour later i had so much pain in my lower back, it was so painful cant even describe what it was like but i couldnt move, the pain went through to the side of my stomach and straight down my side. i couldnt sleep properly, i kept waking up because it hurt that much, just cried. tried a bath and paracetamol and no good. babies moving and kicking about. But iv still got this pain in my back, it not as bad as what it was like night but it still hurts, hurts if i move or keep still so cant win. but its like someones stabbed me in the back left the knife there and wiggle it about. Giving my midwife a call as soon as my partner gets back to me just in case i need to get checked out, but just wandering if anyone else has had anything like this happen to them. Also was told baby is head down yesterday (i know he can move back around) but also lost a bit of my plug about a week ago. Iv also got sharp pains in my tail bone, getting a few 'braxton hicks' (i hope) but baby is really low and it hurts when he moves.