 [ Symptoms ] i have stopped taking celexa for 3 days because i cannot afford to go back to dr for a refill any otc meds i can take i currently do not have medical insurance and ran out of my celexa with that being said cannot afford to go to dr for an authorization for my 90 refill order i ran out 3 days ago about to be 4 and am experiencing stomach cramps headache and insomnia [ Disease ] hi have a good read through webmd link it should answer your questions but like it says you should really see your own doctor asap <link>#side effects good luck