Hello! Recently I've been having a problem where when I'm laying down trying to fall asleep my lower left abdomen area starts making a popping noise with each breath in and out. It also feels like something (gas bubble?) is shifting up and down and if I press down on it I can shift whatever is. There is no pain, it's just quite annoying. Any thoughts on what this may be? Is it related to diet or food sensitivity? Is there some over counter medicine that could address this (I've tried Pepto-Bismol and unfortunately it doesn't seem to combat the popping much)?