Foreskin hurts during and after sex

Hi There,

Just recently my foreskin has started to hurt during and after sex. My forskin has what looks like scratches on it. When I pull it back it feels like someone is ripping my foreskin apart. Once the foreskin is back it is fine.

I also have a white band round the tip of my foreskin but this has been there for a few years, it went away and then has just came back.

Cheers.