I was told that it was very fortunate that I was wearing my mtb helmet rather than my other helmet. It has more material in the back and stopped my head before my OTHER helmet would have - chances are I wouldn't have been able to wait a month to see a doctor otherwise but thankfully that isn't not what happened

As it was I had major neurological symptoms that eventually let to injections to take down the inflammation causing them. I am thankful!
I do think you nailed it in one. THIS is the challenge at starting the fitness journey later in life - this is where I think my initial over-use injuries/etc were from.