A story that I sympathize with. Although nothing as dramatic as having to have hand surgery as ever happened to me, I recall countless times in my life when my physical pain was discounted for whatever reason — by many people around me including my sisters and mother. There was a time many years ago I had a flu and threw up so much I strained the muscles between my ribs, to which my mother said “nonsense”
A week later she had the same illness and complained of the same pain.
The thing is pain is pain. It is an intensely personal experience and trying to play it down for other people never does you any good.