what am I feeling?

Melissa
I'm so confused! 
I started feeling little jabs on my left side, I'm 12.2 weeks but I can't if it's just gases or if it's the baby! 
Today during the ultrasound he/she was moving around like crazy and the woman asked me if I've felt anything yet. 
I'm not sure what "flutters" are supposed to feel like cause it's my first. 
I can't wait to feel my little cookie 😩😩