Ear congestion remedies?

I have had congestion in my right ear for a week. I have no cold or flu. I had strep throat about three weeks ago. The congestion comes and goes – some days worse than others, but it is never completely gone. I have tried everything, decongestants, peroxide, vinegar & alcohol, ear pain drops, but nothing clears it up. It doesn’t really hurt but I am experience dizzy spells and certain sounds are painful. Any ideas?