hi im 16 years old and i am uncircumcised. one day i realized i needed to pull back the foreskin so i tried it a couple times and started stretching daily. after about 6 months i could get it over the head when flacid but it wouldnt even budge when erect. so very recently i tried pulling it back all the way and got it! so i proceeded to try and masturbate with it. it was a little painful but i figured it was just ok. i started having some trouble and the pain increased a good deal so i pulled it back into its normal position and tried to finish. this resulted in what resembles a paper cut on the top of the foreskin. its stopped bleeding but im still very confused. please help and thank you in advance