I found your post because I've experienced a similar situation. It is so awful to have the rug pulled out from under you. My mother is also a big liar and I don't agree with the above post that suggests she has a right to keep this secret from you, REGARDLESS of what it is. You have every right to know the circumstances surrounding your conception and birth, it's part of your identity! It's not just curiosity. We have to know where we are from to know where we are going.