Everytime I have sex with my wife I try and wear a cock ring so that I can get a firmer erection, but right after we have sex and I remove the cock ring, I experience blood clots and blood in my urine. I used to be able to wear a cock ring with no problems or complications at all, now I have semi erections, and can no longer have a firmer erection. What can I do to get a firmer erection? I tried Viagra, and it has no effect on me at all.