Is my oris dysfunctional? To put it bluntly..?

I know how this Yahoo answer stuff goes- I've seen all the stupid answers and I don't want to hear the same recycled stuff. Basically when my is stimulated my legs shake uncontrollably and I need to squeeze or hit stuff with my hands. Before anyone says this is normal or this means it's great, listen carefully.. it's not a pleasurable feeling. It's not enjoyable. It's just me shaking and wanting it to stop. And I've asked other girls and this is not how they describe it. It stays at that plateau of me flipping out and shaking, but I can't get beyond it and it doesn't feel good. I want to know for sure if this is a medical problem. It's not mental either, trust me..