This reminds me of my own situation, I was in my teens at the time. I too refused blood for fear of being disfellowshipped. Now, that threat of excommunication no longer scares me and I am finally living a happy life, not one of fear and control.
Everyone that is still "in" should look at themselves in the mirror, evaluate your happiness. Is it real?
Do you refuse blood because you don't want to upset God? If so, that is the wrong reason, since the Org takes the place of God and Christ. My view is that the blood doctrine was placed in the Bible simply because medicine at the time was unable to detect diseases or other complications of transfusing blood. I mean, we eat foods now that were condemned in the Bible at one time.
Just my $.02