Some people that we know have a daughter who had unexplained vaginal bleeding at age 6. It turned out that she had passed a (some??) kidney stone (Yes! even at that young age!!) and it was bumbling around in her bladder, causing the bleeding. There was no infection in her bladder, just the stone, so of course all of the tests that they did for bladder infections came back negative. It wasn't until she had SEVERAL x-rays that someone spotted the stone in her bladder. Whatever it is, I sure hope someone can find it SOON! I am such a worry-wart, I can't imagine the uncertainty that you both must be going through. I will continue to pray for you both; please keep us posted! God's blessings!