A really bad night

Alright, so I think I'm really hitting the tough bit of my pregnancy now.
Last night I woke up about 11pm and I could not move. My back and my abdomen were so sore. I called out for H, who was still up on the computer, and he had to drag me up. Then I walked around the house for a good hour waiting for the pain to subside (it got worse as soon as I tried to lie down) and a part of me was obviously freaking out about the possibility of being in labour at only 33 weeks which is not a good thing.
Anyways, in the end the worst of the pain disappeared and when I went to lie down I realised that as long as I stay on my side, and not on my back, all was well. So yeah, no more sleeping on my back.
My body is still a bit sore today, the only time I've felt all good today has been the half hour M and I spent at the pool.
Also, another horrible aspect of being heavily pregnant... I am finding it very hard not to waddle when I walk and/or put a supporting hand on my lower back. Gah!