a question about heat exhaustion

[mv7267]

I was officiating a week one HS football game in Ohio, late August. I worked outside all day on a bulldozer then went to the game without eating anything but a handful of pretzels in the locker room pregame. It was mid-80's with 70%+ humidity. First half went well, first drive of the 3rd was a quick score. Our umpire hurt his knee during the try for point and knew he was done. Last thing I remember was telling the home coach we were going to finish with 4. Then I am waking up in an ambulance on the way to an ER. From what I was told, I passed out wasn't responding. After every test, I was released with heat stroke/dehydration at 3am. I still don't remember anything after talking to the coach. We kicked off and had a series or two before this happened.