Am still a little confused. So have you been using the Advair DAILY? Or are you using to stop an attack? If you have been on the Advair as a daily preventer for only 3 days, that is not long enough to show improvement. It can take 2 -3 weeks.
If they also gave you albuterol (you did not mention it), that is for asthma attacks. So if you are having an attack (that is, wheezing spells, difficulty "catching your breath", etc) then, yes, that's what it is for. Try one puff and see if that helps (will take a few minutes). If one doesn't do it, then try another but no more after that for at least 2 hours.