If your AD isn't working after 6 weeks it probably doesn't need more time... either needs a higher dose or you need to try a different one. Sometimes GP's give doses that are too low to be effective I think (mine did before I saw a psych, who told me the dose I was taking was not going to help). What is the med/dosage?

Also the sexual side effects of SSRIs get better over time as your body gets used to it in my experience. I think other men here will back me up on that. It's not a good reason not to take meds if you do need them.

Hope you start feeling better man - exercise can help a lot if you don't do that already.