I dont obviously know how bad you were nor should i compare it to myself but......................................When i started on prozac i knew i needed it. I could not wait to go to bed to wake up and take my next pill and that alone was theraputic because i knew it would help and from reading and other peoples experiance i knew i had to giv eit time to work. A week later i felt better, just a tiny bit but this is also because i let myself off the hook and had admitted without shame i had severe depression. That alone i believe is the first step. Second was saying to Dr (between crying my eyes out) i neeeeeeed help NOW. The second week or so was terrible dry mouth ann insatiable thirst. I swear I was peeing spring water and could have sold it. This eventually subsided and it was 2 weeks later i saw my Dr again to check i had not got worse, which i had not. I was not fantastic by any means more i would say on a level, but i knew i had to give the pills time. I also did alot of reading and soon realised how i had been unwell for ages. In answer to your question it took 8-12 weeks of 20mg aday before i started to live again!
I saw my dr for a third time and said to her " a different person sits before you". Everyone asks me what is it like being on prozac and i say i am me again. People think they are like doing an E or something and one mate wanted to take one. It takes weeks to make a start and months some say up to 6 to feel the full benefit. I really cannot see the benefit of taking prozac for a month. In fact I would say it was iresponsible to do that to someone.
Also please be aware during this time when i was feeling great again i had a really bad day and convinced myself the tablets were not working and my mind became very black again. It was a day my wife went to london with her friend and left me with the 3 kids. I took them to the pub garden and had a few ciders (not the kids) for the first time in ages which started off ok, but when walking home i felt the urge to talk, but ofcourse my wife was not there. The next day i felt worse as above and so convinced i was spiraling out of control. My wife returned on the sunday evening and the monday i was right as rain again. It was not the prozac not working, it was my outlet for my thoughts that had gone missing for the day. This was a revelation to me and made me realise how if I allow my mind to go unheard i can do alot of self doubt. Talking is so so so so so so important but ofcourse someone has to want to listen. My wife has since had a trip away with mates for 4 nights and left me with the kids and i had a ball because i knew i could cope.
Ithink your answers in there somewhere joethfc