...how did you get back on the horse?

First of all, it took several years after my diagnosis (Generalized Anxiety Disorder/OCD) for me to get the nerve to talk to my doctor about going on medication. She prescribed me sertraline a couple of weeks ago. It did not agree with me, and after two days of some nasty cognitive side-effects, the doctor told me to stop taking it and drink lots of water to flush it out of my system faster. One of my worries is that I was too dizzy and disoriented to drive when I tried sertraline--not ideal when your weekend job is as a bus driver. I lost a whole weekend's worth of hours, which triggered a great deal of financial anxiety for me.

She asked me if I wanted to try something else, and I said yes, because I am tired of spending such a high percentage of my time feeling anxious. So I have a bottle of Prozac in my bag now. I was going to start it Sunday night, but then I decided to put it off until this morning, and this morning I decided to put it off until tomorrow morning. I've done my homework, and I know the Prozac could have completely different side effects from the sertraline. But I'm still afraid to take it. I'm afraid I'll be unable to work while I'm adjusting, which will be a financial strain (and doesn't exactly look good to the boss). I'm afraid that if I have another bad reaction, the Prozac won't wear off as quickly as the sertraline because it stays in the body longer. I'm afraid the Prozac won't be right for me and I'll have to try yet another SSRI, which might also hit me as hard as the sertraline. I feel like I need to start it this week, so I can report the results to my doctor when I go in for my annual physical in five weeks.

Does anyone have any words of wisdom about the anxieties of trying multiple medications? Or any success stories about Prozac, maybe?