Need a doc

Gender:male

Age:18

Height:6,0

Weight:270

Need a doc opinion

So i went to the basketball court yesterday trying to lose weight and had ate nothing all day and didnt drink water to rehydrate so i got confused on my drive home looking around confused where i was at (this lasted like 5 seconds) Got Home blood sugar was 78 then today i went again and had ate today and played basketball for an hour outside but i didnt rehydrate at all again and i was sweating more then usual when i took like a 5 minute break and i was scared thinking it was gonna happen again on the way home and was thinking about it on the way home and couldnt stop thinking about it and then i felt like i got confused but at the same time i felt like i didnt if that makes sense blood sugar was 111 and im not diabetic and im also miss spelling but who doesnt? This is the second day it has happened after exercise but im also thinking its cause i havent rehydrated the whole one hour im at the basketball court