Im a 200lb blk male, 6'1, age 31, non smoker , lives in Michigan. No other health issues but asthma. diagnosed with asthma as a kid.I went a year without having to use my albuterol inhaler. 3 months ago I started having sudden shortness of breath. It happened once a week and as weeks passed im now having to use the inhaler 3 times a day. I went to the doctor and he sent me to take a pulmonary test. The 3 part test had me breathing into a machine. It came back I had chronic asthma which I already knew because I had it since a child. The weird thing is, there's no wheezing or coughing. When the shortness of breath happens I use the inhaler or nebulizer and it clears up. Nurses say my lungs are clear and no fever or sickness. When the nurses test my lungs by breathing into the tester thingy I blow 350. After using the breathing machine, I blow 500. I received a steroid shot and was sent home with prednisone 10 mg tabs. I have 4 days left on them. They seem to work a little bit but not really. I'm really lost and don't know what to do. Please help. I never had this issue before.