I've just found out I have a chromosomal issue which can be passed down in my children and need to start thinking about donor eggs and/or testing the embryos. Has anyone done either? I know nothing about either of these apart from the fact that there's a 50% chance of passing on what I carry so it's highly likely we will need to go down the donor route. Is this even a possibility in Australia or do you need to go overseas? How does it all work please?