So lately I've notice when I lay down it gets harder to breathe. I was about to take a nap n I had to keep taking deep breaths.. I was sleep for about 2 minutes n woke up doing for air.. This has happened 5 or more times throughout this year.. My chest feels empty.. Sorta like an anxiety symptom (I used to have this with anxiety) .. N my nose feels clogged.. Heart problems and sleep apnea runs in my family.. My heart feels like it racing sometimes.. Our my chest feels like it's tingling.. N when I walk up stairs I have to catch my breath.. I'd this normal for 17 years old? Could it be anxiety bc I've been stressed?