Suggestion regarding penis foreskin.

I have not undergone circumcision and feel that the foreskin opening on my penis is a little small. Though there is no problem in my day to day life and I've been healthy throughout without any ailment or problem in this regard ever. In an erect situation though, it gets a little painful if the foreskin is pulled back from the head and I feel that the head is very sensitive also, maybe more because it's usually been covered because of not been circumcised. Because of which I can't have the foreskin below the head in any situation and it gets a little uncomfortable in erect situations. Need suggestion if I need to do something about this to make it more easy and comfortable where I don't have to immediately pull it back in a situation when it gets pulled back in a situation of intercourse.