How to tell the difference between flutters vs gas? FTM?

I’m about 14 weeks along and was told you can start to feel flutters. My issue is that I seem to feel it around my belly button below and off to the right of my belly button. I have Gerd so it’s kind of hard to tell the difference. But when I sit still mostly I noticed the very gentle bubbles ( gas feels much stronger and louder) are right next to my belly button of to the right. Could I be feeling flutters so soon? Thanks in advance!