@starrynight - Welcome to the asthma sufferers club! Trust me, you aren't alone. I have asthma and I've also read that the asthma rate in the United States has increased in the last few years.
I've had asthma since I was little so I have a few tips for you. First of all, carry your rescue inhaler with you everywhere. Even if you haven't had an asthma attack in a few months, trust me you still need it. Bronchial symptoms can come on quickly and you don't want to be caught without your medicine.
Secondly, be sure to monitor your symptoms. If you're having attacks that aren't being fully treated by your rescue in inhaler it's time to go see a doctor. Don't put it off. Also having asthma attacks more often than normal is another good reason to see the doctor. Your doctor may want to prescribe you other medications to use daily to control your asthma to complement your rescue inhaler.
Asthma is a serious condition but as long as you stay on top of thing it should affect your life too much.