Did you find out what triggers your asthma? Allergies, stress, exercised induced, etc...?
Are you on medication or inhalers? Always carry your inhaler with you, in case you may need it.
Take asthma seriously, my wife has asthma, when she was first diagnosed she was 17 and did not take it seriously. She smoked. She had to go to the emergency room a couple of times because of difficulty in breathing for intense treatments.
Be careful catching a cold, sometimes with asthma it can turn into bronchitis or pneumonia.