Sharp pains/tightness

A
No one answered my last post. So I'll try again. I keep having sharp pains in, what feels like, my lady parts & lower abdomen. Sometimes I'll get tightness, like BH maybe, along with the pains, but it hurts; like a muscle trying to stretch but it's not felxible. Everything last under a minute and is random. It's been happening the past eeek, almost everyday. Any ideas on what it could be ? 33W 3D. OBGYN appointment Tuesday and I'm going to mention it for sure. Just curious of opinions. Thanks