So go and see someone, and don't hesitate to tell them you are gay. If you leave sex problems alone and just hope they'll get better, they probably won't.
Get yourself a spot of professional help, as soon as possible. So if you've got some sexual difficulty, don't suffer in silence. The most important thing to realise is that these days, most of those conditions can be treated. Sex problems occur in homosexual people, just as they do in heterosexual people.