Suggest Treatment For Pain And Increased Sensitivity In Penis

once i did the sex with a boy when i put my cock in the ass hole and after few secondds when i get it out a blood comes out from my cock and it started paining lot and for few days i i beared the pain even when i have 2 do bathroom and after that day i hav not done sex . my age is 23 and what 2 do its pains lot when i pulls my foreskin back and also when i touch the top of cock its very senstive even a single touch gives me a sensation and that put my cock down what should i do