Hey Eryn...You need to start over on your withdrawing off of the Celexa. IMO...NOW. I withdrew from Lexapro and tapered over a 4 month period. I still had some anxious, ill feeling moments ,but knew what they were.
You are having very clear withdrawal symptoms. I read that you said you "stopped taking it one day". If you can reach your Doctor tonight, I would do so. If you can't reach the doc, if you have any Celexa left, I would take one of your regular dose and see if your symptoms subside. If they do, there is your answer and it will also answer the question of "should I just stop taking this med cold turkey?".
My experience with cold turkey withdrawal was sweating, shaking, feeling tremours run all over my body, not being able to sit still, not being able to lay down, trying to run from the sensations, throwing up, totally escalated DR to the point I might as well have been having a bad acid trip. Nasty and awful. If this sounds like you...please seek immediate help for yourself.
Hope this was of some help.
terri