I felt very similar to the way you are feeling. I lost all my friends and the family I had gained in "the truth". I ended up with a major ulcer. I felt like I had nowhere to go and nobody to turn to. That's how JWs want you to feel if you leave or get disfellowshipped. So you'll feel like you need to go back.
It took me awhile to realize it's ok to be alone, it's ok to be lonely, it's part of life, you eventually pick yourself up and get the opportunity to see that you have worth, you are strong and you can take care of yourself. Eventually, you may even see that you can lean on God; without human intervention.
After awhile I decided I was going to start getting to know the world. I was going to start getting involved in things and start meeting friends, etc. I started salsa dancing, I reconnected with worldly family members, I started going out with people from work, I started listening to talk radio, I got involved in politics. I saw that there were so many things out there for me that could be enjoyed. And I realized that not being a JW allows you not to feel constantly worried you are doing something bad. I realized that there are so many wonderful people out there and God could not possibly want to destroy them all. I have come full circle and I am now actually revisiting the Bible. Not revisiting organized religion but reading "Crisis of Conscience" and other books, studying a little bit everyday with my children out of "One Year Book of Devotions for Kids" and just reading the Bible bit by bit on my own. I now have the ability to take what I want (believe) from each source and leave the rest behind. I know that I don't have to believe everything that one organization tells me to believe. It's exhilirating! It's freedom from bondage! I have accepted that I can actively be a good person, I can love God and that can be enough.
It took me awhile to see that not only was there life beyond JWs but that life can be enjoyable, non-judgemental and relatively stress free! I no longer feel like I could be destroyed anyday by a ruthless God who loves only lemmings who would run off a cliff for a manmade organization.