You have already received good advice on this matter...I agree.
ssri withdrawal can be worse than opiate withdrawal. Doesn't have to be, but some are hit very hard by it. You seem to be one of those. Never stop these cold turkey. If you can't handle the withdrawal, go back on the last dose of Celexa at which you felt fine and taper down as slowly as you need to.
saw doctor today trying lexapro and have been off percocet for about 45 days now i am gratefull to have been responded to. maybe i will listen better to ween down when i am ready. I will post progress so it may be of help in the future if someone has issue with celexa