Please help fainted in shower what is wrong with me?

simplysam_
im only 13 5'4 an a 120 pounds about an hour ago i was taking a normal hot shower when all of a suden it got a little too hot for me so i got out an opened the door an continued to shower. but once i got back in my eyes went blury an my ears went ringing i couldnt here or see anything when i dropped to my knees I thought i was going to die an I suddenly lost consiousness for a few seconds when i got up i could see but my head was pounding an the ringing in my ears continued I stumbled an to the other room to look for my dad an right when i got to him i reached for the chair but didn't make it an fell. when he got me onto the chair he began to talk to me an give me lots of water he made me something to eat because i didn't eat yet an gave me vitamin B-12.

my dad says the reason this happened is because i sleep to much (about 10 hours a day) and because i only eat about once a day. can he be right? also im under a lot of stress because of previous bullying an me going into a new school an family issues.
Please help fainted in shower what is wrong with me?
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