Yes, you should see a doctor because while it could be asthma, there are other lung diseases and even heart issues that could cause similar symptoms, such as COPD or congestive heart failure. It very well could be exercise-induced asthma, but you really need to be evaluated.
You mentioned other issues you're having at the Crohn's forum which sounded like possibly an allergic reaction, so it sounds like you really need to get checked. I hope you can get some answers.
55 yr. old--CD over 43 yr. Hemi-colectomy '01; spinal cord injury '01; fistulae since '97; enteropathic arthritis, chronic pain, muscle spasms, scoliosis, rotator cuff injuries
Sometimes I have a wicked sense of humor, other times I have no humor at all, but most of the time I just have no sense.