As far as I know, not being a doctor, it sure sounds like you are fine. If you have any reflux it doesn't look like it's doing any damage.
Back before fundo, and while I was on PPIs, I had non-acid reflux (triggered by food intolerances). I didn't have inflammation or damage, but I had a bad valve.
Your ENT probably couldn't tell if you had reflux, just looking down your throat. For that you have to get different tests. I think the ENT could prescribe them, but he might prefer you see the GI.