Wheezing?????????????

Ok sooo yesterday during my homeroom we had relish (its just basically where all the people who dont have work out get to go to the cafeteria to hang out for the hour and go outside and stuff like that) I went outside with my friends. We were running around a little bit and when we went back in i was wheezing really bad. It took 30 minutes total for it to stop. Then i had another episode at our dance but this one lasted maybe 10 minutes and it really worried one of my friends. And these arent the first times its happened but before it went away quickly so i pretty much ignored it. Now i want my mom to believe me cuz i know right now she doesnt believe that i've been wheezing. I need good facts and all that type of stuff cuz i brought it up after school before the dance yesterday and she just shrugged it off. Also when i was wheezing each time i kept getting dizzy and the first time i almost blacked out...If it helps im 13.