It is a pity that such situation happened to you.
Divorce is always very difficult and stressful. And the worst thing is when you realize that your relationship has come to an end.

It seems to me that your request to see a doctor is not a reason for divorce. You've probably had difficulties in the relationship for a long time. And your request simply became a catalyst for your husband to make such a decision. So do not blame yourself, divorce is always the fault of both.

Maybe it will be for the better? I understand that it is difficult for you to realize this now. But time will pass and you will understand that everything happened as it should have happened.