I feels like popcorn popping in your stomach.
at first u think any little thing in ur tummy could be it but when you do feel it you'll know its your baby its a totally different feeling than anything u felt before .
To me it feels like some one is thumping my stomach with there finger lol
To me it felt like somebody was flicking me. Or maybe throwing a bouncy ball around lol
To me it felt like light thumping as gas
The flutters felt like when you go down a deep hill and your stomach drops to me at first, then it started feeling like bubbles popping. A couple weeks later it started feeling like a knocking almost, and now it feels like little bulges. It's an interesting feeling.