Is my sex drive gone forever? Starting to get really depressed and upset

I was on lexapro for 3 days, yesterday I stopped taking it because of the side effects were making me feel awful. But I cant get aroused how long will this last? I don't enjoy masturbation and I can't orgasm. It's like all of my nerves have been numbed and nothing feels good. I'm 17, I'm young and this is so frustrating. I feel broken.