Apple watch buttons
So i'm enjoying another day after school, and when i go to check my messages on my Apple watch (series one, 42 mm aluminum case) i press the crown button to go to the menu. I try again, and it doesn't respond. Taking it off and on doesn't work, and i cant restart it as the side button doesn't work either. Now this has happened before, somehow fixed it by slapping it 10 times, but this time it didn't work. So now i panic, because this has helped me with alot and now it doesn't work. How do you fix this? Why does this happen?
Apple Watch, watchOS 3.2.3