I've been really good to my ears since getting tinnitus. It was an opportunity to be good to myself just this once.@Michael B
Thanks for sharing, and I decided a while ago I would not be going to any concerts again. Glad you seem to be ok, although be aware that sometimes a T-spike can take a few days to develop.
With properly placed earplugs, putting fingers in your ears should not add much more protection. Perhaps in that situation you are better off putting your hands over your ears, which would be analogous to ear muffs, a sort of double protection.