I'm sorry, Katherine

There probably is no reason why it didn't work, and there's certainly nothing you did that caused it not to work. Try to put that out of your head. Please remember that even in nature, most embryos don't make it. I know you're grateful for the blessings you already have, but I can understand that that doesn't mean you didn't want THIS child just as much as you wanted the others. You still need to mourn. I wish you the best. Take care of yourself.