Egg donation?

Has anybody ever had any experience with this? It’s something I’ve been seriously looking into, I actually signed up with a donation center but I haven’t filled out the paperwork yet. Would I have to wait till I was done breastfeeding? Did the hormone shots make you feel different/anxious? I’m pretty sensitive when it comes to hormones, the depo shot practically made me lose my mind. How to the extract the eggs and is it painful? Will it have any effect whatsoever on my future fertility? This is something I really want to do but I’m not taking it lightly, if anybody had any advise about it it’d be appreciated.