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'm 4 weeks pregnant & experiencing sharp pains when I get up too fast or make sudden movements. Is this round ligament pain or something else? Feels like stabbing dull cramps and it comes and goes!