Prisila,
Welcome. I am also new to the board. I read the board everyday for a long time before I posted though, I was so nervous. I think it is great that you are seeking out help. Leaving isn't going to be easy, but hang in there. Places like this will help you. I think reading the posts of some of the Ex-Jw veterns is powerful.
I also lost all contact with my parents and sisters. It was hard at first, but now I have new friends and feel like I am being true to myself and what is right. I think that you have to do what your gut tells you is the right thing to do. Seek out other ex-JW's when you leave,either here or in your town. It is your key to strength.