Hello! I am a teenager who plays softball, basketball, and runs cross-country. Right now it's cross-country season, and I run regularly. I'm in shape, but lately I've been having trouble breathing when I run. It doesn't take long until I start to breathe with my mouth open, and I feel like I can't take a whole breath in. Also, cough up mucus when this happens. Could I have sports-induced asthma?