Dr. I have been taken Prozac for over 6 years, my family Dr has asked to take one a day 40mg. But, my piquiatria has asked to take two a day in the morning. In either case, I have dreams (nightmares) at night and I get at nights and have headaches, this is happening for 6 months. I just can t take it anymore, and even I m afraid to go to sleep, the next day I am tired and very concern. What should I do?