Sharp pains?!

Heather Marie • HG survivor! My heart & soul William was born 4/26/16 6lbs 9oz. 19.5" long. Baby #2 on the way! 👶🏼💙
I have been having on and off sharp pains in my uterus? I'm only 6 weeks. It's been happening for a few weeks only when I move too fast or turn my upper torso. Is this round ligament pain?