I've noticed I have more problems with it as I get older. When I was younger it was just during AF I had that kind of fun. But overall - since having Liriel I don't get anything as bad as I use too. Heck - labor wasn't that bad IMO because until I got really far along it wasn't even as bad as the AF cramps I use to get.
If you didn't normally get cramps like this, I would ask if that is near you appendix or if you might have a kidney infection. You wouldn't
think Oing would do that to a person. Our bodies sure can be cruel to us.