Round ligament pain or something else?

From what I understand round ligament pain is on the left or the right side right? Well, I get this Charlie-horse feeling at the very top of my uterus sometimes. (I'm 14 weeks, so I get the feeling about halfway between my pelvic bone and belly button).

If I cough or turn oddly or sneeze or pretty much the typical round ligament pain things, but instead of it being on one side or the other, its like a horizontal line of discomfort at the very top of my uterus. I get it maybe 1 or 2 times a week. Although I describe it as a uterus charlie-horse, it does NOT feel like menstrual cramps. It goes away after a minute or so.

Anyone else ever get this? And what is it?