Original sin is a Catholic doctrine. Lutheran/Calvinistic Protestants believe in something called "total depravity" that makes original sin seem like a wimp. Meanwhile, the ancient eastern and oriental churches don't believe in original sin at all. They claim it's an invention of the "west."
Incidentally, this is what made me a Noahide. I was reading an Eastern Orthodox booklet a friend had lent me, and the author was simply ranting and railing about the "arch-heretic Augustine" and the "pagan Greek" doctrine of original sin. He said the true doctrine of human nature is taught in the Talmud. Yes, he actually said that! I had been noticing as I went from Protestant to Catholic to Orthodox that with each one human nature was less messed up (an Orthodox priest told me there was no difference between me sitting there talking to him and Adam in the Garden!) What is the purpose of chrstianity or the crucifixion of there was nothing wrong with us to begin with? We already had a religion of morality and ritual, and it certainly didn't need to be replaced by another one. I concluded immediately that what wasn't broke didn't need fixin'.
So, you have never sinned?