Uh, first i cant believe your doctor said that, that makes no sence, he doesnt know? GET A NEW DOCTOR! when i went into my doctor and i said that i thought i might have it, she gave me a steriod inhailor and a ventolin to be used when i have acctual attacks.
This is pretty much doctor 101, so go back and say you want to see a specialist and that you want to start an inhailor now.
he probably thinks its just anxiety and youll forget soon enough or something, which is also inappropriate, so just tell him like it is and what you want. its not like its pain killers, and if it doesnt work youll know.
Also, since your in canada like me, so this will be the perfect plan for you, next time you get that same symptom go to the emergency room and tell then you think your having an asthma attack and then theyll help you and youll probably know then, but eather way itll get back to your dr, that you did that because the canadian government wouldnt be too happy to know that he oculd have treated you but decided not to, forcing you to go to the emergency room costing the govmt hundreds of dollars instread of a simple 50$f for a quick in office appt,. and next time hell be sooner to help you out, trust me, this works