Sterilization

Just recently went to Gyno and have tested HPV positive type 16....I had breast cancer in 1999....I am turning 40 in a week....my husband and I would love to conceive but with all the factors listed my chance of cancer is extremely high....so having a sterilization procedure has been recommended.  I am really having a hard time with this.  Am I crazy?  Why does it sound so final and make me cry when I think about it?