I am a 22-year old male. I drink a little,don't smoke and don' take any kind of drugs. But last time I just took one glass of bhang because of my friends. That was the start that night i felt the effect of that and I was freaked out. On the next day, I felt vomiting and dizziness so I went to college health centre and they prescribed me metrogyl 400 and zenetac. 
After taking 5-6 tablets the problem became severe and I had to run to home to see doctor but nothing major happened. I came back and visited the college doctor again then he told me that the reaction of bhang and metrogyl is causing this. I am suggested to take rabee-D for 7 days.Its been 1 and 1/2 month but still causing problems like floating and shock at the time of rest or trying to sleep, dizziness, vomit, body shaking, unusual heartbeat and pulse in head, cant stand or walk for many minute and cant concentrate on study etc. What is the matter with this? kindly help me, I really want to know. I just have 2 week before my exams. Your advice is highly appreciated.