What to do if i have a suspected peptic ulcer. could rectal bleeding have something to do with that?

Possible: If the bleeding is brisk, red blood could be detected rectally but most often a bleeding ulcer will turn the stool black.

Probably not: If you are having red blood coming from your bottom from a peptic (stomach) ulcer, you are probably not going to be sitting at the computer. That amount of bleeding can be life threatening. There are probably 2 different things going on. The doc looking after the peptic ulcer should investigate the rectal bleeding as well. May need endoscopy and colonoscopy to know for sure.

Perhaps: Bleeding from a peptic ulcer generally presents as black tarry stools, not bright red blood. If you have copious amounts of maroon and red blood this could be from a peptic ulcer, however, this is only with very severe hemorrhage. Small amounts of red blood from the rectum are usually from the colon or hemorrhoids. You should always discuss bleeding with your doctor as some evaluation is needed.