I have had similar experience - post 2nd vaccine sévère vertigo (never had before). Then developed severe constipation Q1-2 this year right after 3rd which I attributed to medication change (though my neurologist was doubtful). I have had to manage this constantly since.

In April I developed suddenly constant tinnitus and a feeling of vertigo (drunken sailor) developed. ENT told me there was nothing he could do. I had not had COVID, unless asymptomatic.

And now I have COVID which manifested with diarrhea first, then eye infection with cough, sore throat, fever (all more like a bad cold) over the last 10 days. This after I had the Moderna upgrade a month ago….. Still have tinnitus and drunken sailor stance….

Not sure what to do. But I agree, I believe the vaccine is just as much a cause of these symptoms as possibly COVID itself?

I have never had intestinal track issues or vertigo or ear ringing beforE.