It's hard to say lately, because my T keeps changing from day to day, I might have a terrible day or I might have a good day and it's quite hard to tell whether it was because of some sudden noise or just random. Today is somewhat worse in my left ear but I've had other day that it was worse as well.
I guess the point of measuring was my way of trying to calm myself by measuring if it really was as loud as I thought it was. Sometimes the meter shows less than I thought and it makes me more at ease I guess. It's definitely not normal though.
Yeah, my T changes constantly to, sometimes in relation to obvious things, and sometimes just because my brain is random and wants to be more hyperactive some days than others.
One thing is that lately, "good days" and "bad days" don't really have anything to do with T volume, pitch, or anything like that. Yeah, sure, when it's really at its shrieking worst to the point that it's hard to tolerate normal sounds / watch TV /etc, that's pretty obnoxious and I think about it more, but I don't actually let it keep me from doing anything, I just sort of accept that it's there and so I can either spend all my time thinking about it, or do my best to just carry on and trust that it's harmless.
It's taken me, like, 15 years to get to that point though -- and I still struggle sometimes a lot more than others. But, at least some of the time I'm capable of having really obnoxious (for me) T and
still not think about it more than 15 minutes a day, which would have been utterly unthinkable even a couple years ago. And, it seems like the days where that's the case, are more frequent and in longer patches than a few years ago.
I have no idea what sounds you hear, LeQuack, or what else is going on for you, so I don't know how useful any of that is. I just think it's pretty interesting. My T is a constant-but-ever changing soundscape of 13-to-15khz sounds, and then some softer, more constant, lower frequency noise. Don't get me wrong, it's sort of a bummer and I wish I didn't have to deal with it, but the list of things I wish I didn't have to deal with is pretty much bottomless.
edit: don't worry about 'normal'; I have a sound meter app on my phone, and a real dB meter that I take with me sometimes, because the world is fucking loud and I also like to have a reasonable grasp on how loud things actually are. If you'd said that you somehow managed to fall and cause a 150 db noise I would say "holy shit are you sure that thing is calibrated right? If so then you should go see an ENT!" -- but 100 db, while it is loud enough to be pretty uncomfortable and I am always irritated when someone slams a door or whatever -- seems really, really unlikely to be damaging. If it were, people would go deaf during thunderstorms. The airplanes that fly over my apartment, at their lowest, can hit ~92, and my motorcycle maxes out at 111. I certainly don't ride the thing without earplugs in and a helmet on, but I've revv'd it in the garage a couple times while working on it or whatever, and it's never been more than slightly annoying at the time.
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stressing about it won't help anything and may actually make your t worse. Try to relax. I think you will be okay 
