That's treeible, i'm so sorry for your loss.
I would've expected milk to dry up already by now- usually, it's a suuply be demand arrangement where you stop producing it within a few days if nobody's taking it. It must be a hormonal thing.
There are some medications you can take to dry it up- it would be prescription though, so you'll have to speak to a doctor about it. In the meantime, don't pump or squeeze any out unless you are really uncomfortable, your body needs to get the message that the milk is not being used so that it will stop making it.
Once again, i'm really sorry for your loss, it breaks my heart to hear about women having their babies still born. Nature can be so cruel.