Round Ligament Pain?

Fianna

I've had two times so far that I think I've experienced round ligament. It feels like a sharp stabbing pain behind my belly button and lower. I've already been to doctor and there is nothing wrong, but for anyone else whose experienced it, what did it feel like for you? The doctor never confirmed that it was ligament pain I experienced, they just said things look fine. I'm just wondering if it's that or if it's something else pregnancy related.