scary

abit back when i was in high school i snook out at dinner time with a lad called paul and he was a heavy smoker and this was the first time for me . so we snook out went into these bushes and he had a big nice bud i had about 5 lungs but it was only a little lucozade bottle and i didnt feel any different then i was walking back into school i spat on the floor then all of a sudden everything went white i thought it was a dream and i thought i was going out of consciencness and then it was white and i could hear like a heartbeat then was on a bench sat with paul and this other person at dinner time outside on a bench and i could hear a constant stopwatch ticking then i walked out of school because i didnt want to stay in that state everything was blurry apart from the thing i concentrated on is this normal