Gassy rumbling feeling after eating? Anyone know what it is?

I'm 4 weeks out with my sleeve. I notice that sometime I get a rumbling or gassy feeling after I eat. Anyone know what this is? Sometimes I can get mixed up as to whether the rumbling is my stomach still "hungry" or am I feeling the digestion happen. What do you think? Thanks.

I have the band for another few weeks but my thinking is that it is your body digesting.  For the gas, try GasX. it works well and fast.  And walk around to let it out. Just make sure to blame the dog.

It's digestion, and yeah, it can be loud sometimes.