I think its because you wounded it by the earphones. That is why its better to put on earphones slowly and do not push in too deep inside your ears while listening to music because it can damage your eardrums as well. read more
Cause you broke something. It could be that you have the in ear style and pushed them in too far. It could also be that the sound pressure is too high and you're damaging you're ear drums very badly. read more