DD was in the same position the week before she was born, and ended up being posterior. My MW said they same as Lilmiss's - that they turn clockwise so it seemed she turned and then stopped when she was posterior instead of keeping going to the front. I did get a lot of back pain, but TBH, because it was my first, I didn't realise it wasn't normal IYKWIM, so can't quite remember how the pain was. I do remember it hurt alot!! But I did manage it without drugs and assistance, and DD didn't turn at any point, so it can be done if thats what you want. Also, my labour started and contractions were really inconsistent and took about 15 hours after my waters broke for anything real to happen. If its not labour, but pre-labour, maybe see if you can take some panadiol forte.