Is this normal??

Laura • I am 25 years old and engaged to the man of my dreams. We are looking forward to meeting our daughter on 03/20/2015!
I plan to ask my OB at my next appointment but I thought I would get your opinion first. 
So I am 31 weeks and I am a ftm. I have been having pain in my vagina for a few weeks now. It feels like I have been kicked down there and now have a bruise but there is no bruise. It hurts to turn side to side when I lay down and sometimes when I walk. Does anyone else have experience with this?