Just started citalopram

Hi i just been given citalopram 3 days ago and the side effects have been really bad im anxious all the time i get upset over the littlest thing always nauseous not eating and started having suicidal thoughts i fell worse.on the tablets than i did before i started taken them i know it takes 2 weeks for the side.effects.to subside but i didnt think they.would be this bad is it normal