Plasma and weed

ok. something really weird happened to me and i think i almost died. last night at about 630 i donated plasma. now i had drinken 3 cups of apple juice, a capri sun and 2 cheesesticks before to help me donate better. that's all i ate. now i got done with the plasma at about 730, drove about 15 minutes and smoked a pretty small bowl with my friend at about 815 and i only got like 3 hits off it. and i have smoked soooo much mroe than that in the past. like eighths in a night. so it was not like i had never smoked before. anyways, we were chillin for about 10 minutes and i decided we should go upstairs to get water. as soon as i stood up, i lost my vision, like these little black squares flooded my eyes and i couldn't see. then my hearing became muffled, next thing you know i'm on the ground. i don't remember too much besides waking up at the top of the stairs wondering what happened. i kept asking where i was and who people were. and i sat there for a bit, and then i gues i jsut passed out again. i woke up after my friend told me he was going to call 911. and i was like no don't do that. and i came too and was sitting there for a while until i got myself up to go to the bathroom. i went in the bathroom and no joke i looked dead. my eyes were hllow and blackened and my lip color matched my skin color. later on i puked my brains out. i wanna know what the fuck happened to me. i hinestly thought i was going to die from smoking weed. scariest thing in my life