Last night i was sitting there after smoking weed and everything was normal then all of a sudden i smelled this weird smell it was like a hot "Mushrooms" smell or something and then i started gettin scared cause i knew "a burning" smell was a sign of stroke, then my head started to burn like crazy and my heart felt like it was ganna shoot out of my chest, can anyone help me or give me an idea of what had happend? this is the first thing that has ever happend like this. (i also have a sore back all the time if that has anything to do with it.