OK - glad to see that you have a therapist.
I went on Prozac from something like October of 2012 until around March of 2013. I will tell you very quickly of my experience. Not to deter you, but I want you to know what you are getting yourself into... and yes, I know medication affects everyone differently, but...
I started very small, like 10mg. I was on this dose for 2 weeks, and I basically felt nothing. I felt worse, actually. It was upped to 20mg for about a week. Still, I was feeling ready to jump. I called my doctor, nearly in tears, begging for some relief because it just wasn't working. He upped the dosage to 40mg, and that's when the fun started.
On Prozac, I was constantly in a semi-state of consciousness, even when I was "sleeping". I say, "sleeping", because I pretty much kissed that goodbye. No matter what I did, I would try to fall asleep at 10pm, then I would wake up at 1am, 2am, 3am, 5am, etc. The doctor recommended taking Melatonin to help me sleep, so I started with 1 pill, then 2 pills, 3 pills, finally I took 4 pills one night (I think that was something like 12mg?) and when I woke up at 1am, I was in such a state of exhaustion, it was almost like sleep paralysis. I was conscious, I could think, I could *barely* open my eyes, but my body was so lethargic I couldn't really move. I stopped talking the Melatonin after that.
When I finally stopped talking Prozac, it literally took at least a month before I could get 6 hours of solid sleep and I nearly wept when I saw how much I slept the previous night.
Now, for the good stuff.
I had bad dreams after D-Day that seemed uncontrollable. Randomly in these dreams I would find my wife kissing strange men, I would find her having sex, I would be going through emails and finding her saying all of these horrible things about me. It was all fantasy but I was constantly a wreck over it. The very first night I was at 40mg, I started to have a bad dream, but in my dream, I got ANGRY, and I was like, "SELF, STOP THIS." And it did. From that moment I could control some of these bad dreams, it was almost like I could just stop the dream, and for lack of a better analogy, pick up the needle on the record and just put it somewhere else so I could dream of something else.
Also, I would have these uncontrollable thoughts. One bad thought would lead to another. What happens if he contacts her again. She is going to leave me. She is going to call him and leave me. Why did this happen to me? I was a good husband mostly. Well, I did do this one thing about 6 years ago. Holy crap, why did I do that. Why did I say that. I am such a piece of shit. Is he better than me in bed? Is that it? I have been asking her for years to talk openly about sex but she never does. Did I pressure her to much? Am I not big enough? Does she not like the way I kiss?
Thoughts like that - it would be uncontrollable for hours on end and I would totally lose myself in it. I would be at work and one minute it would be 9:15am and I'd see the office reminder come up to tell me I had a meeting I had to dial into at 9:30am, and then I'd get all caught up in myself and the next time I'd look at the clock it was 10:08. Prozac helped me stop this.
Honestly if I didn't have the problems with sleep, I'd have taken it for much longer because I felt it was very helpful for me to stop getting caught in thought patterns like that. Yes, sometimes I was numb to the world but at times like that, frankly, you NEED to be numb and alcohol is definitely not the answer. I recall when I came off the Prozac and my doctor was asking me to basically give some feedback on it, I described Prozac as, "Poison being the cure."
I wish you good luck and I hope you don't experience the sleep problems because they are just absolutely the worst.
I guess this wasn't "very quickly" after all. Heh.