Zoloft to Citalopram any positive results

I have been on sertraline for 3 months but only works for few weeks..at every upped dose, then stops and very tense and down again..my doctor wanted me to try Effexor but I'm a little afraid of this one so i asked to try Citalopram instead. Its second day on 20mg. Feeling ok...Praying this works. Would appreciate any positive stories.

Fingers crossed smile

☺thank you!