Until you get the pressure out of your inner ear, watch out for altitude changes. I had a friend who worked at an altitude that was over 1000 feet higher than where he lived. He actually ruptured an eardrum simply by driving to work one day. OUCH!

So in other words, if the decongestants don't work, definitely see a doctor. A plugged eustachian tube can become a serious problem if it doesn't get corrected.