With everything you have shared with us, I simply can not urge you strongly enough to see a doctor IMMEDIATELY and tell him/her what you've just told us. (Print out your post and take it with you) Since it sounds like you are attending a college or university, they must have an infirmary on campus. Go there NOW. PLEASE. You are in a real crisis, but there IS help for you! I promise.
I'm very proud of you for coming to us............that you are reaching out proves you WANT help, and it's out there for you.
Let us know how you're doing, OK?
We'll ALL be waiting to hear from you!
Peace
Greenlydia