I'm 33 weeks and for a couple of days my back has been having pains across the bottom and in the night when I wake to pee my legs don't Seam to work and I almost fall over but once Iv taken quite a few steps I'm steady. It's the same during the day but only if I have walked a lot then sat down for a while and try to get back up my legs hurt badly my lower back hurts and my legs won't work properly!!! I don't see my midwife until next week. Does anyone know what is going on?