Yea dude, I'm 99.9% sure it wasn't laced, it was just some fire-ass dank shit. why do I say that?

1. I've been a really heavy smoker from time to time, and smoked a ton overall, but I take long breaks, like 6 months - 2 years. And a few times the first time I got high again, when it was some high high highgrade, pretty much the same thing happened to me, except I wasn't nearly as scared because I understood what was going on. (Actually it was worse for me cuz I also do this thing where my high brain is so excited to be back that it trys to process the 6 mo - 2 years of life its missed and I kind of OD on emotion... it sucks, but it only happens the first time.)

2. The whole "laced weed" thing, yea it does happen but its incredibly rare. I think people talk about it alot more than it actually happens.

3. The 2 or 3 true stories I've heard of people who smoked PCP without knowing it were about 1000 times worse than yours.

So relax, its normal and it will get alot more comfortable. like snorbel said, just take it slow, and probably the smartest thing, tell the people you're smoking with beforehand that you don't smoke much, steady smokers don't expect occasional smokers to keep up and hopefully they'll understand if you want to stop hitting it in the middle of a session