I seem to have sort of the opposite effect of a lot of people on ...

I seem to have sort of the opposite effect of a lot of people on anti-depressants: I get hypersexual! I feel as though I am constantly on the verge of an orgasm, and this has happened on every anti-depressant I've ever been on. It is not as pleasant a feeling as one might think, it's more annoying than anything because that's practically all you can think about. I haven't discussed this with my doctor because: 1. He is probably about 90 years old. 2. How would I bring up the subject? Has ANYONE out there had a similar problem?