I agree with Rick, you do not have asthma, but talk to a Pulmonologist or the lab where your test was done. They are the experts.

I have had moderate ashma since I was a kid. My mom, who is a doctor, took me to multiple doctors who could not find the answer for my shortness of breath. A well known pulmonologist looked at my test results and laughed because he said that I had huge lungs and that I actually had moderate ashma but it was hard to diagnose by regular measurements because you needed to compare my test results with those of a 180lb male. At 18 years old I decided on my own to stop using my daily ashma chord and I felt ok. I still used ventolin as needed (which was mostly when I was sick etc.) At 22 I took the stress test, by a different doctor. The results were on the border but not enough to warrent an ashma diagnosis. It is very frusturating because I still use my ventoline inhaler and i really believe that I couldn't manage without it sometimes. Sometimes its hard to breath and the inhalor works!