People can develop asthma at any point in their lives, don't worry. And don't worry about the doctor's visit, the inhaler will make you breathe so much better it'll be worth it! It'll be a cold stethoscope applied to your back and lots of "take a big breathe in, okay, now let it out ... (moves the stethoscope 2 inches) and repeat ad infinitum." Been there, done that. No big deal, I promise!

If the doc mentions pets, remind him/her that the attack happened at school, with no pets present.