I had a severe adverse reaction to celexa (citalopram) a few months ago and still not functioning properly, speaking, personality change, feel impaired will I be k?

Celexa (citalopram) Need apppointment with your md to reassess.
Likely. Likely you will continue to improve as the med washes out. Depends though on how long you have been on it. Occasionally you can have withdrawals as you come off it. Please be sure to check in with the prescribing physician, until you do, they will assume you are fine. You stated "severe" reaction, if this is still the case, seek medical attention immediately.