If i don't have asthma, why am i having exercise induced asthma symptoms?

Exercise difficulty : Exercise can result in difficulty breathing not only by inducing bronchospasm (asthma), but also through possible cardiac (heart) problems, esophageal problems (reflux), and also decreased conditioning and/or unrealistic expectations. An exercise breathing study with appropriate cardiac precautions may be helpful in establishing correct diagnosis.

Depends: This would depend on whether you exercise induced symptoms are truly asthma related or not. If the symptoms happen within moments to minutes of starting exercise, they are not asthma symptoms but rather vocal cord dysfunction, which would require an evaluation by a pulmonologist regardless; if the symptoms start within 15-20 minutes then they may be related to exercise-induced asthma.

Types of asthma: Yopu may be confusing "intermittent" versus "persistent" asthma. The fist occurs infrequently (maybe a few times a month). Persistent asthma is more frequent and is what most people think of as "asthma". Exercise induced asthma is often considered intermittent. Depending on how often it occurs when exercising.

Who told you that ?: Asthma has a variety of expressions, not a one size fits all. It is heavily influenced by genetics & within the same family some may have a mild form including exercise induced bronchospasm (EIB) while others have full blown asthma. If you have EIB & not something that mimics it, you have a mild form of asthma.