I hear you Kazz!
I'm due next weekend, and at the moment I have a horrible nagging back ache that has started, and early this morning I had a terrible spell where I had pain low in my abdomen which radiated through to my back - at first I thought I was going to pass out, and then I had to fight off nausea, and then over the course of a little while it eased off, and I just felt knackered. The backache is still there, but not too bad.
Isn't it all such fun??