Hey, so I've started noticing this strange thing where I can actually see my stomach pulsing, mostly when I'm lying down and my belly is flat, but not so much when I'm sitting. It's happening around my belly button area. I'm not really thin, with a height of 5'8" and a weight of 67kg. I also have PCOD, so there's some extra fat around my stomach because of that. Is this pulsing something I should be worried about, or could it be serious?

The visible pulse in your stomach, noticeable when lying down, could be due to various factors, including aortic pulsation, abdominal aortic aneurysm, or increased abdominal pressure, but given your PCOD and stomach fat, it's more likely related to aortic pulsation, which is generally not a cause for concern;