I have PD and my only sign is a left hand tremor. But when I eat a small meal I feel bloated all day. Today I woke at 6AM and found a tray of donuts. I ate one and am still bloated at 3PM. I know I must eat to be able to have a BM and if I don't eat my stomach growls while I'm constipated. Testing shows no problems in the stomach or small intestine. But the signal for a BM is missing in my colon. Shortly I'm try to have a BM. Maybe I can force some stool out, maybe not. That's when I grab the suppositories. Or Fleet Enema.
When that's done and the BM has happened my stomach still feels bloated.