Early menopause

I have been with my boyfriend 2 years and found out 3 weeks ago I will not be able to have anymore children. I have two kids from my previous relationship and my bf loves them like his own. I feel guilty I can’t have more children, and he has always wanted children of his own. Is it wrong for me to want to walk away to give him that chance? I have a fear of hun resenting me in the future, there’s so much that can change.