Failed FET 3 times

kJ

Has anyone had a successful FET with donor eggs after 3 fails. The first time no implantation the 2nd time miscarriage then I did the ERA testing and went and got the IV intripids for natural killer cells and the 3rd time no implantation. I’m not sure what I’m doing wrong or what my doctor is doing wrong. Has anyone went through this. Maybe God just doesn’t want me to give birth again, I’m assuming x