What it says in the subject really. Have had lower back pain for two days, only alleviated by sitting on a hard chair (ie not a sofa), very painful lying on my side, standing, walking etc. Thought it was bad posture so have been making an effort to stand correctly the last two days, but no difference. Today I have started gettint what feels like Braxton Hicks across my uterus. I'm only just 16 weeks. Anyone had anything similar?