Advair Diskus and general practioner

I am a 30 year old female. I was prescribed Advair in January when I had maxed out the dosage for Azmacort (which I had been on for close to six years) and was on my second dosage of prednisone. At that time, I could not walk across the room without getting winded. I spent most of my days wrapped up in a blanket in my rocking chair. My general practioner referred me to a pulmonary specialist as he wasn't sure what to do with me. The pulmonary specialist is the one who prescribed the Advair.
The dosage I was prescribed was 500/50. I immediately cited the "increase of asthma-related death" and was told the study was flawed. I can't recall the name of the study, but I did read through it and it wasn't a well-thought out study. So I gave it a chance. I did not read the side effects flyer because I wanted to give the medication a fair chance.
My breathing immediately got better, but I've put on 25 lbs since starting the medication (had to go out and buy new pants and tops). I've also experienced nosebleeds. Sometimes I can feel them start and sometimes I can't. It's a little nervewracking because I don't know if I'm going to have one in public. I've had a lot of weird dreams over the last six months that I didn't think to be a side effect of the drug... now I'm beginning to wonder.
Another thing I have experienced since starting the drug is random blinding headaches that leave me sensitive to light. I'll go to work and have to decrease my computer monitor brightness and turn down the lights.
As a result of the weight gain, I have been watching what I eat. I've increased fruit and vegetable intake, reduced the amount of high fructose corn syrup I ingest. In all, I'm probably treating my body better than I ever did. Unfortunately, the weight has not come off.
My pulmonary specialist has brushed off any of these concerns that I have raised.