This morning when I woke up I was curled on my side, knees up. I awoke with the distinct sensation that my lower abdomen was being squeezed to the point of popping. Remember Indian Burns? When some asshole wrung your arm like a towel? That was sort of the feeling, but right below my belly button. It was comical. I think I even looked at it - just to be sure no alien was about to sprout from my gut.
At first I thought I had to pee terribly (I always wait too long), but as soon as I rolled over and stretched out flat, the pressure just eased away.
I guess it was just my ovaries telling my bladder to back the fuck off or it was going to get ugly in there.