Hi , and thanks for posting your question - it's a good one! While we cannot provide medical advice over the internet (for your own safety), your concern certainly warrants a reply.
In the most general of terms, a medication like Advair may take a week or so for the patient to feel its effects. This may vary from patient to patient and can also depend on proper administration and remaining compliant with one's dosing schedule.
You may want to discuss this further with your prescribing doctor. As Advair comes in different strengths, this may need to be re-evaluated once you've been on the medication long enough to measure the effects on you. You'll also want to inquire about the doctor's suggestions for the use of your rescue inhaler.
What do you think?
Please do check back and let us know how this all turns out for you.
Good luck!
Leon (site moderator asthma.net)