@Jem70 this scares the flippin' heck out of me. I'm so sorry you're experiencing this. Are you with Monash? If so I can dig out my consent forms for you & have a read if you like? Mine were signed 3 months ago so are recent.
@BlondeinBrisvegas nope, in counseling there's absolutely no mention of a donor changing consent once an embryo is actually made. Before-hand yes, but not after.
PS: I've just tried to find my signed copy for you but Monash didn't give me a copy to retain. I'm now going to request one.