that is just horrible news. I am so very sorry for you. you did not mean to do it........ thats why it is called an accident. accidents happen all the time and I know that you are aware of a lot of other accidents if you have been reading on this forum. yours is not the first and it unfortunately won't be the last. I can't count how many times I have stepped on mine.
Push that guilt aside.
that little soul is looking down on you and saying " Its ok mommy, I don't hurt here".
I will add you to the prayer list.