Hemorrhoids aren't uncommon for people with IBS-C, even at 20 due to straining and constant constipation. You may even have the occasional fissure. If you're asking my opinion, I wouldn't worry about it much unless you start losing weight for no reason, develop unexplained fevers, if the bleeding is intense, or if you have tar-like or maroon colored stools. See a GI if you're really concerned. Best of luck.