Baby movements???? I know im not crazy!

Tabetha
This is my fifth pregnancy, and im pretty sure last night while I was laying down I could feel my lil one moving around in there. I'm trying to convince myself it was just gas but I know what I felt. Wasn't very distinct, but definitely felt something tiny moving from side to side. I'm 10 weeks today. My sac is measuring a week and a half larger than baby so he/she has plenty of room to bounce around. Has anyone else experienced this?