I get really scared when i get depressed to the point i feel like killing myself and then i throw up violently when i get through thinking like that?

Depression help: I'm sorry you are suffering so much. Suicidal thoughts can be terrifying, even to the point of vomiting. Please speak to your pcp to ask for a referral to a mental health professional for help with depression. Your pcp may ask additional questions about your vomiting and overall health. Depression is treatable! See: http://www.nimh.nih.gov/health/publications/depression-what-you-need-to-know-12-2015/index.shtml#pub4If you feel out of control, like you may self-harm, do go to urgent care or ER.