I'm Struggling

So I just started citalopram a week ago. I'm on day 8 and it's just rough. The first few days absolutely sucked. I felt so sick and exhausted and just totally out of it. About two days ago I finally started feeling fine and thought I'd be okay from now on. I guess I was wrong because today I've felt completely out of it. I was out for a celebration of life today and got back about an hour and half ago. I feel terrible. I'm super cold and I have this weird sensation in my body that's making me feel ill but not? I can't even pinpoint what feels wrong but it was enough to make me start crying because I don't wanna feel like this anymore. I just wanna feel normal again. I'm not sleeping well, I'm constantly anxious, starting to feel depressed and I'm losing hope. I stress out every time I have to take my meds because I'm afraid they'll make me feel awful. Guys am I the only one going through this I need comfort :(