Whyis not posible ,if you pregnan an animal wich you type of blood,after that take an organ fron this animal?

my question es because I have a kidney decease,I am waiting for 7 years .and I m going to die because is no posible for me to find a match kidney,I apreciate if somebody can get in contac wich me to discus this topic thanks ,this is very serious question ,I am not playing, is for save my live