Has anybody suffered bad side affects when coming back on Citalopram

Previously been on 20mg and then 10mg for last couple of years and it worked fantastically. I'd planned to wean off and was successfully on 10mg every other day and felt fine.

I started taking 10mg each day again due to anxiety coming back after moving away, did this for a week then went back to 20mg because I felt it would help being back on it until I got settled

Side effects have been bad - extreme tiredness, dizziness for first week or so, nausea, complete loss of appetite. I take it at night and have been on 20mg for about 9 days now