Love died. What's next.

I've been married for years. Had kids all whats generally expected. I was content.
I ended up in hospital and since I came home it seems my marriage is in need of hospitalisation.
She barely talks to me and closeness is gone. My wife decided that I am not worthy of being loved or appreciated.
I'm trapped in a hell. I think was it all worth it? If the shoe was on her foot she would be very hurt and feel abandoned and suddenly hated. I did nothing to deserve that. I wish I could change things but how...
she barely speaks to me and doesn't listen. I feel so unhappy and alone.