Little floating shit can be particals of dust in your eye or even just the fluids in your eye, sometimes if I'm in certian light I can actually see the dust in my eye (although I wear contacts). Was your bud laced? If there's absolutely no signs of being laced it could be just a reaction because you haven't smoked in a while. Bodies tend to flip out sometimes. My friend smoked haze for her first time afters smoking maybe only 5 times in her life and for a week after she swore she felt high; started to freak her out. I say sleep a little extra, stay hydrated and busy and maybe try to limit your smoking or cut back. When shit like that happens your body is trying to tell you something; what exactly, i'm not sure. Good luck hon