Oh fair enough! Better to cancel the cycle than risk it if the progesterone can damage the eggs anyway.
So we got the call. 12 eggs fertilised nicely. They are watching 5 others that are still going but haven't interacted with the sperm (whatever that means). Kinda sad that we have potentially lost 6 but I guess only the strongest go on! Now we are desperately hoping we don't lose many (or any!) in the next few days!
ETA - sorry @NandM I didn't see your post. I really hope that you're wrong. Are you going to another test? Bleeding in early pregnancy is quite common. Fingers crossed that's all it is!!