Have been taking Fluoxetine for 5 weeks and was told it would take a while to feel any benefits but was hoping by now things would have settled a little. Have had extreme tiredness, trouble concentrating but the worse thing is the vomiting and constant nausea. Just wondering if this is normal and I should bear with it and hope it will pass. Does anyone have experienced this? So not only am I still feeling depressed but now feel constantly sick