i kena before alot of times
it's irritating..... got ringing sound right? then cannot hear
properly and you will feel very pek cek 
but it will go away after a few days so dont worry
there are a few ways to get rid.... you can wait for it to go away,
or you pinch your nose and breathe out hard.. try for a few times
sometimes it will just 'pop' and will go away
