I get that too, mostly right around O and i get some pain associated w/it on one side. Its actually somewhat normal as far as I know. I got it checked too cuz I was worried and had NO cysts. so if your scared have the doc check it out, but from my experience it was ok.
Hey that happens to me as well. Not only do I feel like I'm going to explode, I look like it too. I think I even look pregnant sometimes. I wish I was!!!! Don't worry, it's totally normal!
I feel like that to, I put weight on and my stomach feels different,I've even got a few stretch marks, the nurse at the hospital said it's my fertility increasing- I hope so for all our sakes and my expanding waistline, Good luck x