I lost consciousness twice, without any particular reason?

Something has been happening to me which is worrying.Im age 17 and a few months ago in class, i slipped and fell.That wasn’t the worrying part.I landed on my knee and well it was just painful.Other than a minor bruise, i don’t think it is anything servere.However,after about 10 seconds while sitting on a chair, i lost consciousness.It was probably due to the pain, but the pain wasnt even very major.When i regained consciousness, i was lying on the floor.My head felt heavy.Judging from my spectacles dirt on the lenses, i must have landed on my face.I dont feel much pain on my face however.
Today, it happened again.My arm accidentally hit the table.Then after a few seconds(about 10), i fainted.When i regained consciousness, i was lying under the table. My head felt heavy as usual.
I have asthma when i was much younger but I already recovered from that a long time ago.Unofficially, i think i have vertigo, sweaty palms and slight tremor of hands.


This Question Is Open to Answers -Post Your Comment Below