1. It's not just for old, fat people. My 38 year old dh almost died from it.
2. Get a follow up. I recommend getting a scan/scope done.
3. Don't blow off symptoms. My dh had attacks off and on for a couple of years, each time it seemed to get better on its own. Until the last one, which ruptured his colon, infected his abdomen, and put him into emergency surgery. He ended up with a colostomy. Not fun.
4. Watch what you eat. Corn and anything with seeds are trouble for my dh.
Please, please don't blow it off. I'm serious when I say that my young, healthy husband almost died from it.