Can your asthma get worse if you stop exercising?

I was diagnosed with asthma young, but it basically.vanished after age 10. I have always been an avid runner, running at least 3 miles 3 times a week, but I recently stopped doing any cardio whatsoever. About a month after I stopped, my asthma started to get steadily worse and worse... I was wondering if suddenly stopping running can have an effect on asthma?