non-U.S. people when talking about their own medical issues: I have this medical issue, I wonder if I should see a doctor, the cause may be this.
U.S. people when talking about their own medical issues: I had this medical issue, I saw a doctor, and the cause was this.
non-U.S. people when talking about their own divorce: I am thinking about divorcing my wife/husband.
U.S. people when talking about their own divorce: We divorced last week.
I would put more US people in the former camp; especially when you consider that a trip to the doctor can become a surprise bill of the thousands for many.
Telling someone a fact that happened in your life is not especially intimate. Like if I had a surgery or got married/divorced, I would tell basically anyone who asked. It's a vastly more intimate experience to consult with a friend - for me it would be a very close friend - about an ongoing crisis in my life. I don't usually ask casual friends for their input on my relationship problems or scary medical issues. Though if I do, that's usually part of building a closer friendship.