how can I get past this or how long will it last?

Recently I started eating healthy, mainly only fruits and veggies and some meat here and there because honestly I've been eating crap for too long, 
Well, after about a week I started breaking out on my neck. I'm talking like, there wasn't a patch of skin on my neck that was clear. I figured my body was getting rid of all the crap in it through my skin. 
It got so bad guys, I got depressed because it started moving up my face and down my back. Zits galore, I gave up. And it sucks because I want to be healthier and eat healthier. Is there any diet you recommend or know how long that ordeal will last if I start up again? Edit I tried this for like 2 weeks. The breakout happened 1 week in, I tried sucking it up and it continued until I gave up and starting eating crap again. What's funny is that once  I started eating crap again, no lie my skin cleared up within like 2 days.