Relax hun! I get it all the time. You need to see your GP (not really ASAP unless its really bothering you). Sounds like you need to get it drained before it gets too bad. My doc said the heart beat thing was the pressure the wax was having on the ear drum. Or something like that. Anyway having it drained cleared it up for a while. Might help if you dont stick your ears under water for a while as well.