Ovulation from clomid... painful??

I’m ovulating today based on opk. I have had the moooost intense pressure and uncomfortable feeling in my uterus area. No doubt something is happening in there! I had to leave work early because it was way too uncomfortable to walk around (I’m a teacher, never a time to sit). Even just laying on the couch is very uncomfortable. It feels like my uterus is full of air, so much pressure. I emailed my doctor juuust to double check (got scared reading OHSS symptoms) and she doesn’t seem to think it’s a big deal so I’m not freaking out about it, just wondering others experience with this? I took 50mg of clomid 3-7. I’m on day 16.