Hi, I'm very worried that there is something wrong with my twin sister. She has been having shortness of breath, headaches, etc. We are 16, and at track practice today we had a 1600m race. She was not able to run as fast as she normally does and afterward had a bad headache/ear pressure and nose bleed and has been having shortness of breath for the rest of the day. She keeps taking very deep breaths and losing breath mid sentence. Is this normal? She says she's fine but I don't believe her. Could this just be allergies something?