I take ms contin daily, but this year I've noticed that sometimes I randomly bleed (severely) if I try to go #2. Even if I don't pass a stool, just barely straining causes me to get an ass-bleed (for lack of a better term, I guess). I suppose it could be my diet. I'm sure eating a bunch of bread and cheese on top of taking morphine isn't helping with the constipation at all, but I like what I like and I'd rather not change my diet or way of life (and I wouldn't be surprised if cheese really does effect your opiate receptors at least slightly because its one of the most addictive foods on earth). I don't have anal sex. Its just not my cup of tea so I know that can't be a factor, but is anal bleeding a common occurrence for opiate addicts (I rarely ever plug anything)?