Wow I'm sorry about that guy taking advantage of you. I'm not saying all men lie but trust me when I say "I promise I won't hurt you" has come out of every bf's mouth lol. And unfortunately some say it and still take advantage. Do you talk to people at school? Do you make an effort to engage in convo or join one? How about social networking? Maybe you can get involved with some kind of groups outside of school? As far as the pain in your chest, it could be anxiety. Are you on meds for anxiety or depression? It might be something to consider. And sorry to say it but you need help ASAP for your suicidal ideation. Are you self harming at all? It's important that you be open with your tdoc. And I'm curious as to why you see 4 diff pdocs?