Studying and vomiting

Guys I have an exam due in 2weeks, passing it will change my life for good. It's like everything from moving out of in laws and supporting my parents depends on me passing it and getting a good job.

But I'm always sick and puking. Whatever I eat just sits in my stomach and I don't feel better till it comes out! I am so tired and drained all the time. I'm almost end 8th week. I just don't know what to do and how to manage? I'm sooooo stressed, anxious and depressed.