The current rage in psychiatry is combining meds, since the dirty little secret is that double blind studies showed that neither meds nor therapy had a very good success
rate. Also realize that stopping the celexa itself could have caused suicidal thoughts, as part of with
drawal. It's hard for you to know what causes what, and impossible for this stranger, the shrink, to know since he or she wasn't there. Do always question them and be assertive, after listening to their explanation.