I'm mid-50s, post menopause and the same. I assume it's due to no longer being on the hormonal treadmill. I used to cry very easily, though hardly ever in front of other people.
I honestly can't remember the last time I cried. I do remember some years back getting very upset at being badly treated by a neighbour, in a way that felt humiliating and plain unfair, a bit like you mention.
I can still tear up if, for instance, a terrible news story catches me unawares, though that's usually only when I'm very tired or need to eat.
I wondered too if it's a case of being all cried out, as I went through an horrendous time around a decade ago, with three close family bereavements.
My life isn't better than it used to be, so it's not that, though I do feel much better in myself now that I'm past menopause.
As to whether to seek help, I don't think not crying is a problem, but you say you're anxious so perhaps it might be worth having a chat with your GP.