I injected meth last night and right after the rush I started coughing like I wanted to vomit, and then I start to get really dizzy, almost like I am having Tunnel Vision. I would like to know why this happens (especially the wanting to vomit right after)?I thought that I might have used to much. About 7:40 am I finished the rest of the meth. I injected $100 within a 12 hour period. All day I have been having a killer headache, dizziness, confusion and I have been having a real hard time breathing (like I can not catch my breathe). It was so bad that I could only take a few steps and then stop and tell myself to breathe. Should I go to the ER or not?