I have had mild asthma for twenty some years but lately allergies...

I have had mild asthma for twenty some years but lately allergies made it worse and I was using my rescue inhaler every night. I went to the doctor and got Advair. My asthma cleared up right away but within a week I was having chest pains and pressure on my chest. My doctor diagnosed costochondritis, which is probably part of my problem. Still, I didn't feel right - bloated, jittery, coughing, dry mouth, constricted throat. I am prone to anxiety but in the past 24 hrs, I've had the worst panic attacks I've ever had in my life. I'm going off Advair. How long does it take for the effects to wear off?