Did I possibly pop my eardrum!?

Ok I think I've unintentionally done something really stupid... I was in the shower with a bad stuffy nose and right nostril was completely clogged while my left wasn't. I was blowing out hard out of my left side only and all the sudden I head a loud pop and I immediately began to lose my balance on my left side. This lasted for about half a minute to a full one at most, which scared the qrap out of me! It subsided and I thought nothing of it but 2 days later it started to pop almost every time I swallow with varying degrees of popping and loudness. What do you think?