ISO Birth Mother, Son born 1972 Helena, MT

I am Looking for my birth mother, I was born in Helena, Montana April 12 1972 at 6:21am at ST. Peters Hospital. I am the only one out of five childern in my family that was adopted through the state. I have no information on my birth mother such as her first or last name. I am not wanting to interupt her life, I am interested in medical information for my self as well as my son, unless she is interested in meeting me.