You need to start timing the stomach pains - if they arent regular, then they are just braxton hicks, mixed with some back pain. I had constant back pain due to a posterior bubs. If you have regularly spaced contractions, and getting closer, you need to get to get to hospital, even just to make sure. If you are in early labour, they earlier you get checked, the better chance they have of stopping it. Sorry if i have scared you