EIA here too. I only have to use my puffer if the temps are below 10 celcius. If not, I hack up a lung... I am glad to hear you're seeing a doctor. They'll help you figure it out.

I also thought about "Pursuitor's (sp?) Cough" but it doesn't sound like you were working that hard. (I get the awful hacking cough if I ride very hard and it's cooler out whether I've used my ventolin or not.)