Painful round ligament feeling?

Maggie
I get occasional round ligament pain. This morning, I stood up quick after snuggling with my husband and it was like a huge charlie horse in the bottom right corner of my abdomen. Around the area where id get round ligament lain, but this was pretty sharp and cramping. It completely went away when I bent forward, and felt sore when I stood straight and stretched it out. It went away for the most part. Just a little soreness, like you'd feel after working out a cramp in your calf. 
Has anyone else felt really sharp and intense round ligament pain? That went away pretty quickly? I'm just wondering if I should be nervous....