Camila,
Kudos to you for getting out of that. You will pull through.
Strong people have suicidal thoughts. You should get someone to talk to; someone to lean on. More than one person, so that when those thoughts get really strong, and one of those people isn't awake to answer the phone, another one will be.
The best thing I could tell you to do about your body image problems is to catch yourself in the mirror. When I feel my very worst, I think about times that I've accidentally caught myself looking at my reflection and thinking that I was really pretty. Most guys don't care about how your areolas look. You don't have to get reinvolved with someone right away.
Do what makes you comfortable!