I sure hope that your test comes back negative and that you can put this anxiety behind you.
I don't know how your life will unfold, but you have done a remarkable job getting sober at a young age.
Your feelings toward your relative who is pregnant remind me of similar feelings that I harbored for many years when I would see someone whose career achievements eclipsed my own.
Now, I am happy for them, knowing that I am probably where I need to be.
I'm glad you shared those feelings.
FWIW, when I was in my first couple of years of sobriety, my life wasn't where I wanted it to be, but I kept trudging the road of happy destiny, so to speak (I think I've heard that somewhere before), and my life turned out to be a continuing blessing which unfolds everyday.
We all wish you the best with this matter.
And kudos to having the courage to make the decision you have made regarding surgery.
I know a lady in town (in her 80's now) who lost every female close relative to breast cancer, and she had a double radical mastectomy many years ago so she wouldn't be joining the ranks of her deceased mother, aunts, sister(s), etc.