Remember Asthma is hyper-reactive airways disease to certain allergen which many time is not possible to avoid as in case of dust and pollen . Inhalation corticosteroid are good measure to keep it under control . Good luck
Next Steps
take regular inhalation corticosteroid
avoid triggering factors special dust , smoke or if related to animal contacts and fur
consult a physician to check with your PEFR or spirometry to confirm asthma