Why Do I Experience Persistent Gas, Burping, And A Layered Sensation Under My Belly Skin After Smoking Methamphetamine And During Recovery?

Hi. After I smoke Meth, I keep having gas, burping and burping one after the other. And Ive been smoking for quite some time, and everytime I’m off smoking and trying to rest, hydrate etc, I always feel like I have a layer behind my belly skin. What could it be?