I started doing H this past summer, never got addicted but would use occasionally (snorting), go through a few bags in a week and then go two or so weeks without using. Recently I was without a dealer so I went over a month without doing dope, when I finally I bought I snorted a rather large, but not too big, line. I almost immediately got extremely dizzy and couldn't even see straight. I laid down and spent the rest of the night puking my guts up. I snorted a smaller line a few days later and again got really dizzy, although not as much so as last time. Then tonight I tried snorting just a very little tiny bit of enough, an amount that would not normally get me high. I have very, very light dizzyness right now, and very very little euphoria. Obviously I should't feel too euphoric from the amount that I used, but I feel dizzier now than I would from a regular-sized line in the past. Is this just bad H or something, or is there another reason why my body might react differently to H now? Thanks for the help.