Frightening experience, possibly laced cannabis

[Daju]

Well to start off i have not smoked weed in a long time (3 months) i loved it while it lasted and i used to be a fairly heavy user. I stopped because i had become depressed and weed did not help at all, infact it made it much worse. So just the other day i was at my house and i had 3 friends over, we all got a little drunk maybe (5,6 drinks each) One of my friends had brought some weed (not from a reliable source) and a gravity bong. i have never tried a gravity bong before. so its late now maybe 11:00 pm. we walk don't the road a little ways and i started off with a big hoot, i held in for as long as my lungs could hold up, i started coughing immediatly. By the end of the first hoot before i even stopped coughing, i felt kind of a "dizzy" high. I have felt this dizzy high in previous sessions but NEVER this soon. SO i thought to myself "well its been a long time and it must be a good bong and good weed." After this first toke i take 3 more medium sized ones, over all my friends, i had the most. we did not even finish 1 bowl. withing 5 miniutes i felt a VERY strong high along with slight hallucinations. At this point i was feeling very very dizzy. I had asked my friends if they were getting a very strong high as well, they said yes. after 10 minutes i had reached a peak, the road was shaking and was wobbling, it was different colours, i remember it being checkered red and blue, soon my entire vision was consumed by this checkered pattern, i started to feel anxiety and fear. i was very confused, and this entire time i was almost canotonic, not talking just standing very dizzy like. i soon lost my balance and had to crouch over. immidiatly i yelled "that shit is laced." in my blind panic. my friends had not expereince this as strong as me. I told them all to stop and we head back up to the house, one of my friends had not smoked any weed, and told me that i was Very very pale. my heart rate was very fast. Once in the safty in my room i felt the canatonic thing come back, i sat there observing everyones behavior not able to talk or move i was almost out of control, my eyes were darting up down all around, it was very frightning. ALong with most drugs i felt the strongest paranoa ever, not that i was going to get caught, just that my friends were all making very harsh jokes about me and in front of me, i know this is not true now but it was very convincing. this peak of halluucinations lasted maybe 30-45 minutes and the entire high lasted about 4 hours. by the end of the high i had calmed down a little and felt a little better but i still had a racing pulse.

i am very frightened this could be a hardcore drug, i have been doing research about it the closest thing i can find is, PCP. if you have any ideas that would be great, i really would like to know what happened to me, if you have questions i can reply.
-thanks, David.