Movement?

Hey ladies!  I'm 17 weeks 5 days.  I've been feeling what feels like a muscle spasm or a heartbeat feeling bellow my belly button.  It's quite low toward my bikini line.  Is this movement, or is it just real muscle spasms?  My last pregnancy ended somewhere around 16 weeks in a MMC at 20 weeks, so I'm a bit anxious to start feeling him move.  I'm hoping what I'm feeling randomly is him.