budget-saving wedding collection in vintage style

Ok so this has been happening since I was about 25 weeks or so. I'm 31 weeks today. My groin, not upper groin but the crease between my inner thigh and butt cheek/lady part is so sore. When I lift my leg to put pants on, walk a lot or squeeze my legs together. It's not where normal groin pain is. Also, it hurts under my butt cheek too. Not a pain. Just sore. Has anyone had groin pain there before?? This is my 3rd pregnancy and I've experienced so many different issues. Tia! budget-saving wedding collection in vintage style