is it possible for food to go from your mouth up into your nose?!

I can't imagine that happening without you realizing it. Are you sure you weren't high on coke and snorted ramen by accident?

Linsey Lohan

I've seen people drink milk and have it come out of their noses, so I guess it's possible! If I were you I would call 311. That's like 911, but not for emergencies. They'll know exactly what you should do.
Good luck! :)