Okay mamas so my little girl is very active she has been moving her heart beat is in the 150's as of…

Okay mamas so my little girl is very active she has been moving her heart beat is in the 150's as of yesterday at my doctors appointment. But I keep having random sharp pains and pressure in my vagina. They said I have no infections or anything so is this maybe just the way she is sitting? It's not all the time it happens maybe once or twice and day and not even every day. I get scared about little stuff like that because I lost a baby early in my previous pregnancy. This one is going great but any pain scares me. Help😞