Just wanted to update because this never was diagnosed but now I know and no dr. argues with me; they know that I am right. The fullness in my left ear is swelling in my left eustachian tube when I am experiencing a MCAS reaction which started with my 1st Covid vaccine or possibly developed after my 1st covid infection. Bummer, huh? It’s like I am allergic to Covid. And getting vaccinated just stirs it up terribly. Although now, I have a full blown autoimmune disease. I told doctors for a long time, that I feel like I am allergic to covid vaccines but nobody would listen. Well, I don’t want to go into all my grievances, but no one would listen to me, including my own family. I’m so tired of being a minority. This is ridiculous. I told them what was wrong and why and was treated like I have mental illness.