Intruse Ellipta

So just over a month ago, I saw my allergy/asthma Dr and did my FeNO and Spirometry tests. My spirometry at that time was 76 (I assume this is the FEV1/FvC ratio). My Dr gave me a long speech about keeping my scores in the 70s and trying to avoid scores in the 30-40 range. He said I needed a long acting bronchioldialator and gave me a sample and prescription for Intruse Ellipta. Then as I left he said I most likely have chronic inflammation from my allergies. The month I used the Intruse, I progressively felt worse. I developed a constant dry cough and muscle cramps. I felt like I had hit a wall and getting through a work day was rough. I returned one month later. My spirometry was 74 with an increase to only 75 7 minutes after an albuterol nebulizer treatment. I saw the PA this time and she seemed upset that my score was lower than previous. I told her how bad I felt with the Intruse and was told I could stop it. She wanted to drop my Advair dose down but since my Dr told me it was the right dose for me on the last visit and I had not done another FeNO test I said I did not feel comfortable with that. So it is over a week later, I have used my rescue inhaler for chest tightness a few times (hot humid weather and exercise) but my cough is getting better and less frequent. I cough up a bit of mucous in the am but even that seems better as I now can get it up. So my question is, has anyone else had a bad experience with Intruse and are there any questions I should ask at my next visit? I have never smoked, my parents stopped smoking when I was 7 and overall I have never had severe respiratory infections. I have had an occasional asthma attack when exposed to large amounts of dust or lots of dogs. I wheeze in cold weather. My lungs have always been clear when listened to and my peak flow is consistently 410-450 which is great for my age/height. I hope the Intruse did not make things worse. Last does an albuterol nebulizer tx make that much of a difference in 7 minutes or, would waiting 15 minutes to test again have been better? My rescue inhaler stopped my Intruse cough so I am not sure why the albuterol nebulizer tx did not help.