Is it true? be honest for those who've taken it.

I just started taking (PROZAC) and I've never taken anything like this which honestly it scares me a bit. I've heard so many things so I don't even know what to expect.
 I really want to know from those who've taken it what you felt or made you feel while taking them and how long did it take you to feel something?
 Also, if you gained or lost weight? I hear this talked about the most and would like to know all this because I know it's different for everyone. 
For those who comment TYSM and god bless you! ♥️