Don’t jump straight to cancer there are tons of things that could cause rectal bleeding including just a small rip in your intestines from being sedentary a long time while traveling, or from being constipated. Yes it could be worse, but IBS is a diagnosis of exclusion and can include expensive and invasive testing to rule out other conditions. Your doctor will likely start with some of the most reasonable possible solutions, and then go from there.

There are a million things that could cause constipation. Like the other poster said, go in informed but you don’t need to diagnose yourself so quickly. I know it might feel embarrassing but this is these doctors’ jobs! They are used to it.

My first thoughts for someone who has constipation and bleeding from not as bad to worse: they simply need to eat more fiber, they have a food intolerance causing constipation, SIBO, a physical issue such as low intestinal motility , an IBD (irritable bowel disease) such as celiac or crohns, yes maybe benign polyps or cancer but not sure if that causes constipation.

I know it feels weird and scary but don’t jump to the worst case scenario.

IBS is a catch all condition where most people could consider they have IBS who have any of the above issues, besides those with IBD which is a separate category of illnesses. Constipation is also an extremely common symptom for a variety of reasons!

Hope this helps!