Pressure in pelvis/lower abdomen

Hi ladies - random question... not sure where to post this but I am currently TTC.

But has anyone ever felt pressure or fullness-like feeling in their lower abdomen/pelvis area (center)? I’m currently ovulating and this started about 5 days ago. I’m not sure what it could be, but it’s never happened before.

Also, about 5 days ago my husband and I had sex and afterwards I went to the bathroom and my vagina was burning, like someone lit a match up there and it lasted for the rest of the night. That’s also never happened before.

I don’t have any signs of UTI so idk if it could be that or would even happen that immediately.