I am really struggling with the horrible constant anxiety caused by my PND. I have started taking Citalopram for the last 5 days and obviously don't feel any better yet. I know that it takes two to three weeks to start to feel better but at the moment two or three minutes is too long to feel like this. I really feel I am going mad. I have no appetite and have to force myself to eat anything. I also have frequent diarrohea and feel nauseous all the time. Is this all normal? Will it go away? I am desperate....