Whenever I lay on my stomach it feels like there are small gas bubbles popping, I can feel the pulse in my stomach and my ribs stick out a bit more than my stomach. The bubbles feel like they're well.. In most places, from my lower abdomen, to upper abdomen to above each of my hip bones and right down near my pubis and over my uterus and then I end up passing gas. I also find it more difficult to breathe when laying on my stomach but that's how I sleep. What's happening?