From the psychoanalytic theory, dreams are the satisfaction of desires.
So it is impossible for people to dream of their own death, and you dream of your own death, if it is as you say.
Then we can only analyze it this way: do you think or hope that the person who died is yourself? The identification of that person's identity at the beginning undoubtedly shows the strength of this "hope"
Your husband's grief is also an illusion of desire. Your marriage should be in crisis. Your husband has been indifferent to himself in recent days. You are afraid of the end of your marriage and filled with regret, so you construct a death scene and take responsibility for the failure of your marriage.
Of course, there is an element of punishment-if you want your husband to pay for his attitude, you will lose you.
A hospital is a place of life and death. You dream because you think about marriage, death and redemption.
Looking for oxygen tanks and worrying about yourself is the externalization of anxiety-looking for ways and longing.
It just analyzes what you already know and what you face, which doesn't seem to help.
But you should know that the divination you want is pseudoscience or feudal superstition.
Your dream shows that anxiety has deeply affected you, and you can see the proportion of marriage in your life.
You should choose to talk to your husband face to face and try to solve the problem. Advice: Men are always under great pressure. There are no obvious signs. Don't doubt. Cold attitude may be work stress.
You can try to turn your attention to the child (if you don't try to have one).
Finally, romance belongs to love, not marriage. Don't expect too much from life.