I have serious anxiety, which is making me really stress out over all this. I went to a heavy metal festival this weekend and I noticed my chest was feeling kind of tight towards the middle of the evening. I had taken an aderall at the start of the day i was dancing and moshing the entire day.it was a 12 hour show. the whole weekend, my chest still felt kind of tight. no pain or rapid heart beats or anything. I had a physical today and my doctor did an ekg and said i have a right bundle branch block. i dont know what it is but its got me really paranoid and nervous. im going soon for a chest xray. but could anyone help shed some light on this or put me at ease a bit please? thanks!!