What would have happened if you got married to your boyfriend at 18 ?

Well, things in your life right now would not be much different.

You may have experienced a miscarriage, but you would not have experienced a live birth.
You see, your hysterectomy, and what caused it was your tragic past of being abandoned by your parents and then not having anyone to show you strong stable love. This ends with you shutting down energy centers in your body, and that continued through your hysterectomy. You never had the parts needed to create a child working within you.

It is very sad. I empathize with your sadness.
Many women in the near future will be unable to bear children.
Being unaligned with the energies needed to keep a healthy body makes it so you cannot reproduce.
It will be like cancer has been over the past decade.
Suddenly lots more women are barren.

Why is this happening to me if I am not bad?

This is a hard one to explain.
You could say that they are very bad to themselves.
But this is only half true.

To keep a human body, you have to have a very specific energetic focus.
If that focus wanders, either because of chemical imbalance or strong emotions, then you lose control over your body.

Too bad your uncle was not born to an eastern religion where he could have learned meditation and Qi practices. Because these kinds of episodes are normal for people who really get out there in spirituality.
Waking dreams.
But you have to have the firm grip of your mind and reality to live in the two worlds simultaneously.

Your uncle probably had some bad experiences growing up that he never worked out.
His parents probably stayed together so that he was in a constant abusive situation.
Or maybe he was raised by an unknown, almost stranger... relative as you were.
He had these strong issues that needed to be brought up and worked through, and thus the brain brought them up in a way that was sure to get his attention - hallucinations.

I can't tell you specifically what was his triggers,
but i can tell you that all the people i know who have healed this have gone back and healed their childhood.

Be well