Is this bad? Will I pass out?

I’m 17 and I wanted to pull an all nighter before school started and well I kinda messed up my schedule so I woke up at 3:00pm the day before school and stayed up until now (next day 11:00am) (well I slept from 5am to 8am) and I feel dizzy will I die? Is 3 hours of sleep bad?
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