Bloody stool has come back, what now?

Even after a month since I've posted a question about this before, it's come back, but it's not as bad as before. I think I'll contact my family doctor sometime this week but I don't know. What do you think I most likely have that's causing it?
Cancer
Inflammation
Infection
Hemmroids
Diabetes
Other (Comment)
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Updates
+1 y
And somehow I didn't crap out bloody poo just awhile ago. Only difference in diet today compared to yesterday was not eating anything from the vending machines.
Updates
+1 y
I jinxed it, the bloody poo came back this morning despite not eating anything from vending machines. I'm gonna assume it's the hotdogs and pizza then.
Updates
+1 y
Seems that my stool has improved and my blood somewhat reduced, after I stopped eating most of the fast food I eat and resorting to more healthier fast food like burrito bowl.
Bloody stool has come back, what now?
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