I am 55 yo male. I havet had sex or even masturbate in months until a couple weeks ago. I masturbated and everything was fine. Last night i masturbated and had a hard time getting an erection ( i take percoset and lavelphernol for back pain). I stayed with it and was able to ejaculate. I had rubbed myself raw and the ejactulation kind of hurt. I urinated several times today and on the 3rd or 4th time it hurt and it looked like there was a blood clot in my urine. I am also constipated most days and had a large rough bowel movement yesterday. I think in the past if i waited a long time between ejactulations it would hurt a little but now due to my back pain i hardly ever try usually due to being unable to get a good erection. Was i just too rough last nite?