Citalopram withdrawal symptoms or old condition

hi

stopped taking citalopram nearly 5 weeks ago and have progressively felt worse over past 3 to 4
spaced out…headache and sinus pressure …ringing ears…dizzy…disassociation…panadol does not fix headache
question…can withdrawal get worse as you get to 5 weeks when most people say that it should be reducing after 2 or 3
still have anxiety and difficulty focusing
any help much appreciated
m