am i gonna faint?!

ok so here it goes.

today i had pe, and i had to race 5 other kids in a 400 meter race and i wasnt allowed to walk. i never run that far farthesr i ran was like 200-250 meters. At the middle of the race, i started to feel lightheaded. at the end of the race, everything was blury and i could barley run. i got back to my 2 friends, and thank goodness my friend allie saved me with a waterfall. for the rest of pe, i felt dizzy. i kept feeling dizzy, but it would deacrease. now, i fell a little bit dizzy and kinda ligththeaded. i cant stop doing homework or miss more school because schools almost out. am i gonna faint?

thanks
awesomegirl123