I posted on here about 10 months ago to do with suffering with chest tightness for about 3 or 4 months. After getting clear on a chest X-ray and scoring 110 on a lung function test I went for a CT scan, the results showed the remenants of a bad chest infection. By this time I was starting to feel better and the tightness in my chest was getting better. I was put on Fostair while all this was going on and I have carried on taking it daily as a preventer. I have always suffered with really slight asthma so with that and having a infection the doctor said it would be a good idea to stay on it for a year or so. Anyway about 5 weeks a go the tightness has come back I have had a blood test to check for a infection in came back ok. I went to see the asthma nurse last week she has give me another inhaler called Spiriva. I take it in the morning It works for a few hours but by mid to late afternoon it starts wearing off and the Fostair isn’t working as good as it was. Infact yesterday my chest was really bad I must have used Fostair about 10 times. I’m wondering if they miss diagnosed me with the CT scan and I do actually have COPD. Also I have read you’re not meant to take inhalers before a lung function test but I wasn’t told that before i hade mine and used my inhaler that morning. Dose anyone know if they could mistake COPD for a infection when looking at the images of a CT scan or if inhalers can effect the results of a lung function test..? Thanks for taking your time to read this..