Hey. I'm 20 and yesterday had an intercourse with a girl for the first time. I haven't been circumcised and my foreskin covers the whole penis. However, this foreskin retracts only a little when the penis is erect, not fully how it's suppose to be.
Every time I tried to retract the foreskin by myself more, it hurts and its just can't be done. When I was having sex, it wasn't pleasant at all because it hurt too much. I'm not sure why, but I think its because my skin was being forcefully retracted every time. At the end, it was about 30% pleasant and 70% pain, and I felt like a girl loosing her virginity. I think my penis even went numb from the pain and I didn't even felt if it was inside the vagina or not (the girl was enjoying herself, so I assumed that it was fine).
However, due to this pain, the penis gets softer. It is erect normally, and as soon as I put in the vagina, the skin retracts forcefully, it hurts, and the penis gets soft.
What should I do about it? Is this a disease? Do I need to see a doctor? Thank you!