Searching for my sister..

I received a phone call from a woman maybe 20 years ago stating she was my sister. I became defensive and dismissed her. Now, I have reason to believe she is my sister and am hoping she will contact me again. I have no information about you. You will know who you are by: You were probably born in New Jersey in the late 40's...my first name is Nancy and my mother's initials (maiden name) are A.S. I and my mother are residents of Pennsylvania. You called me so you know who I am, my last name is the same. If for any reason you are searching this site, please know I am looking for you and hope to find you...please contact me.