Hi there @Windywel
I've taken Citalopram for years and plan to take it for years more.
I take 20mg.. started on 10mg and worked up.
it takes a while to kick in and what you're describing seems very usual. It's a horrible feeling isn't it... anxiety is awful.
Obviously part of your condition is to worry, but trust in the process... Citalopram is very good a resetting your malfunctioning anxiety wiring and it will happen. Bear with it and give yourself time to adjust.