Am I just out of shape or do I possibly have asthma? I just did my physical today and everything was good!

I went back to the recruiting station and did the OPAP (or whatever it’s called) and I did everything fine except the running.. by the end I was coughing and even slightly wheezing... now take into account I don’t exercise regularly at all. The guy with me was coughing too. 

I’m not sure if I’m just out of shape or if there may be another issue... the last thing I want is to go to basic possibly having asthma then being kicked out immediately.