Private adoptions in ILLINOIS

I was born October 23, 1974. It was a private adoption with a lawyer named Alan Neideman(sp?). I was born in Oak Lawn, Illinois at Christ Memorial/Community Hospital. My birth parents' last name is Leavitt. I think the hospital is now Advocate Christ Medical Center in Oak Lawn, IL. I am told my Birth Father was Polish, and Birth Mother (a young teen), was Irish/German/Dutch? I am 33 and married 1 year ago. I have always been curious and would love to connect in some way..even if it is to get family medical history with no other questions asked, if preferred. I am open to any type of relationship. I heard my maternal grandmother had breast cancer..I would like to know more. I hope we can connect in some way..it has been 33 years. I am very happy, adjusted, successful, and ask for very little. Anonymity can be accommodated.