Hi Fiona,

I wouldn't worry too much at this stage about what to do with unused embryoes (but maybe that's just me). I've done a few IVF cycles and have a whole stack frozen at the moment. Nobody has ever discussed the issue of what to do with them when I am done. Currently I pay about $200 every six months to keep them frozen and I will worry about what happens when I don't need them later. I know that in Australia you can't sell them. Not sure if you can donate them to anyone. I always just assumed I would have to sign some forms and then never think about them again. God, it sounds awful typing it!!!

However, I have never had much luck with using frozen embryoes - and success rates are generally lower than fresh ivf cycles. I think that this might be the main issue for you to consider in deciding how long to wait. All things to discuss with a fertility doc. Good luck!!!