Sounds pretty normal shell, some days I get aches in all strange places, in the earlier months it was my *wolf whistle* it felt like it was being dragged out slowly. Then I got aches in my pee pee tube..what the!? At the moment I get some small back aches but only for a minute or so when I have a BH, and if I lie on my side bub makes the skin near my hip bone ripple, how she manages that I have no idea! As long as bubby is making some sort of movements and your not in any severe pain, I'd say just go with it and enjoy it as best you can. But if you don't feel right, definetly get it checked out