Welcome to the board, my son was born in 1983 and he was the first in our family to wake up to the fact that it was not "truth". He was sixteen and it was so hard for us to deal with. My husband was an elder and we had a younger daughter. It took another eight years before we were all out including our youngest son who is now 10.
I had bad feelings for so long while I was in, coming out was a relief and my husband following me was so important. I can only suggest that you give yourself time, reassure your family of your love for them; do not explain too much. Tell them you need time to think things through and that it is between you and Jehovah, they find it hard to argue against this statement. Tell them your bible trained conscience is bothering you and you need to study alone to sort things out. I used this tactic and it worked in the sense that we were left alone and have not been disfellowshipped or shunned by the majority.
The guilt and fear subsides when you realize that you have been under a form of mind control, I proved this by experimenting just before I left the congregation. One meeting I talked for a few minutes with some sister about Jesus, I mentioned his name five or six times in a few sentences and spoke of how he would handle things today. The looks on the faces of those sisters was one of uneasiness as if I had become born again or something odd like that. The next meeting I spoke with the same sisters and kept mentioning the faithful and discreet slave and the organization says this, and that....they did not blink an eye, they were relaxed and accepting of what I said. It really scared me because I could see plainly that they were only comfortable if it was from the organization and not so much Jesus. I stopped going the next week and have never been back.
I did read the King James version of the bible following my departure and after six months of research I no longer felt the need to check up or study any more. I was free.
Best wishes to you and your family, hope it turns out fine for you, my motto is "be true to yourself", anything else is just living a lie.
Chicken little