I think this could be one of 2 things:

1. The weed was laced with something (unlikely but possible). Even if it was laced with something that alone could not have messed you up that bad with those few hits that you did, it had to be some reaction you had to it added to that, whether it be mental or physical.

2. It was just a very bad reaction to weed. Like I said either mental, physical, or both. Do you take any medication? Do you have any health problems (physical or mental)?

The 1st time I smoked weed and actually got really high, it was incredibly intense but very enjoyable and euphoric. I also smoked about 5-10 times more (2 large blunts) than you say you did of very strong weed and it was all good reaction. I had the time thing where I would see something happen before it would happen and then it would happen over and over in my mind.

IMHO I believe that you had a bad reaction to weed and it was a combination of things. It sounds like you had a panic attack while this was going on as well. Either the reaction was that weed just doesnt agree with you or you took medication or you had a pre-existing health problem mental or physical. Ive had some incredibly bad trips on weed, PCP, and many other substances and trust me when I say nothing you did could have fucked you up permanently. Try to look into that health problem thing, if it wasnt that than it was just a bad reaction to weed with a panic attack for whatever reason and just give it time and itll go away. Either dont smoke weed at all, or learn how to do it so its right for you and you dont have a reaction like that.

__________________
"Hey Mister...this here is the stairway to heaven, you know that don't ya?"
"...Obnoxious little frog"
"...Fine why should I care?...I warned you though!"