. I think I had a panic attack? Basically I have a biology test tomorrow and I was sort of cram revising. I get a lot of stress in these situations as It is an important test. I was studying all day,and I went to sleep at 12.00, hoping to wake up at 5am. I couldn t sleep and after a sip of water I had instantly felt like vomiting. I vomited everything in my stomach. I ve been also having a high heart beat (115 bpm) and my neck is stiff. I also have a mild headache, and I feel dizzy. I can t sleep also. And I have just vomited right now, within 2 hours of vomiting last time. I drank water and it came right out- as bile I think.