Hyperhidrosis? I sweat a lot in my armpits.?

Use your experience as an opportunity to learn to plan ahead next time. Seriously, it's ridiculous how many questions I see from kids saying "yeah, I need a magic solution to this by tomorrow, thanks." Sorry, but life doesn't work like that. There is sort of nothing you can do, kid. You're SOL. Learn from the experience that there isn't always some magic cure you can learn about the night before online and BAM you're saved, because in most situations, it isn't the case, and if there is a solution it takes preparation. Good luck. Hope it teaches you to plan things out better.