You have more clitoral orgasms a week than I do. It's natural as a woman ages that her capacity for clitoral orgasms diminishes, even with everything in good balance. I would focus more on being vaginally orgasmic, and give up masturbation altogether if you are having sex that frequently. In particular I would suggest toning your PC muscles with the Gyneflex to take your vaginal orgasmic ability to the next level.
Wellbutrin is pro-sexual for many women. I don't know anything about Ativan, but I would think its tranquilizing effect would have to have a negative impact on sexual function, at least the high level of sexual function you are expecting from your body.