@ebrahim, I am happy that you and your friend to have each other for support. I joined Connect because I was looking for others like me, who had received transplants, too. I want to invite you and your friend to the following Discussion Groups on Mayo Connect where others are sharing their experiences and asking questions.
Groups > Transplants > Discussions
https://connect.mayoclinic.org/group/transplants/
Groups > Kidney & Bladder > Discussions
https://connect.mayoclinic.org/group/kidney-conditions/