I was on 20mg of prozac for 2 weeks, during that time I had mood swings, anxiety, crying spells, depression and then it cleared up. My psychiatrist just increased my Prozac to 40mg 2 weeks ago and it didn't do anything until now. Now I am feeling so much more depressed than I did. I have no motivation and lethargic. I'm having crying spells but the depression seems worse. I also feel kind of sick in my stomach and I am really tired. Is this normal? Am I getting accustomed to the dose? Is this too high a dose? I feel better now but still feeling the symptom. Is this going to end?