Vomiting due to Red Bull. Not to do now?

I drank 3 cans of Red Bull in one single day in order to increase my performance as I am currently in my final semester with back to back papers. So I started off with my first can of Red Bull in the evening, then again I drank my second can around 11 o clock at night and finally the next morning at about 5.30 am, I drank my final third can. However it was just after finishing this third can that I began to feel nauseated and just before an hour ago my exam I vomited like hell. I had mostly consumed them in an empty stomach. And though I felt a lot better after puking, yet its been hours and I feel sort of week. So Docs, what to do and what not to do now? I'm hell scared. I swear I am not touching Red Bull again.