Hi, I'm Marsha, and have had my ostomy for more than 50 years. Originally, I was thin to average, and had a flat belly, as well as a well formed stoma. But the years passed, plus two pregnancies, and my body changed "shape". Weight gain didn't help. I started to notice a protrusion on my right side, next to the stoma, a few hoursn after I ate. No real pain, but some pressure. I started to gently massage the area, and that seemed to get the bowel moving.. I could almost "press" the fecal matter, out of the stoma. .
Spoke to the dr. ( who wasn't the original surgeon) who said the bowels probably shifted over the years, and as long as there was no pain, not to worry about it. It's really very odd.....as it feels much the way it did, when I was pregnant, and could see baby parts pushing against the skin.
As everyone will tell you , drinking a lot of water is important for many reasons. I drink at least 8 full glasses ( 64 oz) a day, and more in the summer. I start the morning, before breakfast by downing a full glass. It's not for pleasure....just medicinal. Gave up ice...and drink it room temp, making it easier to go down. Ice is for "pleasure" sipping tea or lemonade.....or ice water, for fun. All that water really does help everything work more smoothly. Best of luck