Suggest Treatment For Tight Foreskin On Penis

I have tight foreskin, I can't pull it back at all, when I do, it rips and causes pain etc, this has been going on for a great time now and a few years ago I could pull my foreskin back without a problem but this worries me now as I cannot have good sex. I need so advice on what to do to heal it and loosen the skin, thanks.