Had microsuction been feeling dizzy and cant tolerate loud noises

I went to an ENT. he did a microsuction before examining me. I had no idea what microsuction was. He said my eustach tube is not working well. I started to feel dizzy and floating after the microsuction. I hear noises very loudly, I cant watch tv.

What happened? What should I do?

Its been 2 months and I still feel dizzy.