I have been on fluoxetine for less than a week but I am feeling so awful. I went on medicines cause of my anxiety and the side effects make me feel worse than I did before --I would rather have daily panic attack than feel tired all day and night and waking up at night at up at 4am for good- unable to go back to sleep. I'm headachy and feel like I'm walking in a fog - not a high dose - only 20mg but I'm so worried these side effects won't go away! Thanks