If you want to become an egg donor and alreday have given birth to a child yourself you have to wait for some time before you can donate your eggs.
This is because you will recieve hormone treatments that would also affect your breastfeeding.
Usually two cycles after you have weaned you can start an egg donation procedure. Because lactation can actually make the fertility drugs you get less effective – thus the amount of eggs that you will produce will be less (dimishing the chances of a successful donation).
"I was devastated and so was my husband after being told by my fertility specialist at age 38 that I had no option but to consider adoption or donor eggs (according to my doctor I was out of eggs and gave me 4% chance of getting pregnant and a 2% chance of carrying a baby to full term). After much research and dozens of hours reading infertility related articles and posts online, I have found your book! [...] After one month of trying I became pregnant and had a beautiful healthy boy. Nine months after that I did everything in your book again and after 2 months of trying I got pregnant again and gave birth to another perfect little boy."