Felt bubbly in stomach

Hi mummies! I’m 34 weeks & recently i put my hand on my stomach as usual to feel the baby. But this is the first time that I felt like there’s bubbles popping in my stomach (top right to be exact). I know what it feels like when baby is having hiccup, move or stretch, but I’ve never felt bubble feeling before this. I’m worried, is it something to worry about? #pleasehelp #1stpreganancy