Tilly, I also have hearing aids, but hate wearing them, and rarely do.
In 2004 I went to a rock concert, and it was so loud, it permanently damaged my hearing.
The theatre it was in wasn’t very big, and I can still remember the floor vibrating, and my ears hurting enough for me to have to go outside for a while. I even remember the torrential rain walking back to the car and the drive home being extremely slow and hazardous because of the rain!
My hearing has been poor since then, although it took me a long time to admit I had a problem, I was quite shocked to find out the damage was permanent, and that it was so bad I needed hearing aids.
Perhaps instead of waiting until you next go to your GP, you should make a point of going in case something can be done now.