So im pretty sure it would be difficult and cost ineffective to lace pot with meth because first of all you dont smoke meth like you smoke pot dude its completely different and if there was meth you'd have wet herb that wouldn't light anymore...as for the dilated eyes if you were outside and it was dark....your eyes will dilate because they need to take in more light to be able to see...same goes for light if its bright you pupils become smaller....the shaking could just be from some good pot i mean how often do you smoke? what kind of herb do you usually smoke?
a lot of people think they got laced shit becasue they weren't expecting the result but the fact of the matter is it costs too much money to lace weed really unless your dealing with a lot of drugs at a time and chances are someone who is, is only interested in profit and they would not get it by lacing your shit so relax and dont freak out....even if it was laced, you didn't die you just got real fucked up