SCARIEST SHITTT EVER?

So I am stoner, i smoke weed alll the time. And i have been smoking weed for about the last 3 years off and on. But anyways the scariest **** happened to me...I was with some friends out in the woods and we were just smokin some chronic and after like 5 hits i started feeling really weird. I started sweating really bad, and i couldnt talk or think about anything. I was sitting up on a log about 6 feet off the ground and i start tripping out my whole vision was going crazy, light turned black and was really blotchy looking. I was trippin ballllls, one of my friends said i wasnt looking to good. and i tried to paly it off cool. All of a sudden it felt like about 5 minutes later i opened my eyes and i was on my back in a bush. my friends were calling my name and i wasnt responding. i felt like i had totally left the planet, i had no thoughts during the few minutes that i was blacked out. I was still tripping and couldnt talk at all. After about 10 minutes i was able to walk and then i was fine....btw ive done shrooms and acid and this experience was FARRRRRR worse then any experience ive had on any other ****. I cant even explain half the **** that was going on in my mind, i was trying to convince myself that it was going to be ok, but i felt like i was dieing. i had taken some meds called trileptal early that day, could that have anything to do with it? anyone wanna give me some input on what happened.