Searching for birth mother, I was born 3/22/1989

I am searching for my birth mother. I was born in Marion County Oregon March 22 1989. I don't have much information to go off of, I do know that I have a cousin who was born on the same day in the room next to me at the hospital... Not sure which hospital. I also know that my Aunt wanted to name me Lisa. At the very least I would just like her medical history since I now have children of my own.