Since like the last week of December I've been noticing weird small things that come out along with my poop. They are the size of a kidney bean (sometimes bigger or smaller) and they usually come out right after I have this different kind of fart. Whenever I sit on the toilet to poop, I just have that weird fart and that's when the little off white colored thing comes out. And then when I wipe, there's blood on the tissue. I'm not feeling any pain or anything like that. This has been going for almost a month and I'm embarrassed to tell anyone! I'm only 18 so how serious can it be? Any ideas why?