Ok past couple of years I've suffered really bad health anxiety and everyday it's always a different symptom so I do the worst thing and google my symptoms and this ha made me worse . So I am now on citalopram and don't feel like it is helping as I have this sharp stabbing pain that comes and goes through out the day at the top of my back directly behind my heart and I am convinced I'm about to have a heart attack .. I'm so scared can anyone advise me please