So I'm almost 16 weeks and for about the last 3 weeks off and on I've had a pain almost like the pain you'd get when you need to stretch but very low in my abdomen.. It's always in the same spot and it hurts sometimes it's bad enough that it's hard to walk and move around especially if I've just gotten up from sitting for more than 5 mins.. Any suggestions on getting rid of the pain or what could be causing it