I'm 31 weeks pregnant and I sometimes get a small sharp pain inside my vagina. On a scale of 1-10 10 being the worst the pain is about a 2. Its my first time being pregnant so it seems like it would be normal but what is causing the sharp pains? Is it a warning that I'm over doing it like walking? I get these sharp pains about a couple times a day and it just started happening this past month. Should I be worried?