pains at 21 weeks

Rachael
So I am 21w and 4 days, and I was sitting on the couch and all of a sudden felt very sharp very intense pains in my stomach and liver abdomen that stretched all the way down to my knees very very sharp pain. This is my second child and I never had that with my first child. I'm sure the baby was just kicking something that hurt. Has anyone else felt this??