(TMI) Pressure feeling.

Sooooo I'm 28+4 weeks and my SO and I just had wonderful sex. (I've got a high libido😋lol) But I'm starting to get this really weird pressure down where my lady part is. It's uncomfortable but not painful. And it goes away when I'm sitting down.. I sat on the toilet to see if I needed to go but nothing. Never felt this before after Intercourse, and I will be talking with a nurse about it, but I just wanted to ask if any of you ladies have ever had something like this happen before??