I went to see Tim McGraw last night. I expected loud music of course but not this kind of loss. It took over a week for my hearing to return to normal after Kenny Chesney! I wished I had taken ear plugs.
I’m used to the muffling sound and the ears ringing. What bothers me is the pitch or tone that I can’t hear this morning. The phone even sounds "squeaky" if that makes sense. When do you go to the doctor?

There’s no point in going to the doctor. There is nothing they can do for your hearing damage. Only thing you can do right now is wear ear plugs to let the cells rest and regenerate. How long it takes to recover depends on the extent of damage. Could be a week or two, or could be never.