Hello akshatp!
I have a friend who just donated a kidney to a unknown person in need. In fact, surgery was just done July 8! She donated to someone else so that her husband could get a kidney from a person in the donation pool that matched him. It's a round robin kinda thing that benefits those who have no matches from willing friends/family. My friend donated so her husband could get a donation. Make sense?
She is doing wonderful, and her husband's new kidney is now working just as well as any healthy persons. He is so grateful to be off dialysis. The reason he needed a transplant is because his own body, for reasons unknown, starting attacking his kidneys. It was an auto-immune thing.
My friend, who donated, just said that the day after surgery it kinda felt like the day after the first day of soccer practice where you'd done a lot of sit ups and your stomach was sore from that. She was put on pain med which made her nauseous. After realizing that is what made her feel sick they took her off it and she felt great.
I salute her and you for doing this! What an awesome gift.
I also used to work with a woman whose husband was an uncontrolled diabetic at one time and it ruined his kidneys. His diabetes is now under control and he has had his sister's donated kidney working in him for over ten years and going strong.