Hi Misophonic Dude, thanks for you post.
So it’s hard to say for sure whether or not you have misophonia from this but what I would say is that (on the whole) I tend to find people know, straight away, that they have misophonia after reading a few paragraphs about the disorder.
It is an extremely intense aversion to certain sounds and if you’re not getting that – and it’s more of an annoyance – then it may be something else.
The reaction to sounds at a certain decibel level could indicate that you have hyperacusis (which is an aversion to sounds over a certain loudness).
Anyway, I hope this helps and wishing you the very best with everything.