Male, born Oct 4th 1970 in PA

Hello, This is my first try at something like this, so I thought the forum might be a good place to start. I was born on Oct 4th 1970 in Pennsylvania and adopted in Allegheny County, PA through a Catholic adoption service. As far as I know, I was a new born baby given up for adoption by a young mother who I believe may have been in her teens at the time and could not keep or raise me. I have more info such as hospital name, doctors names etc that I wont post here on the forum just yet. I am searching for my birth mother, and also have the hope that maybe I have siblings I do not know of, due to her being so young, I would imagine she may have had more kids later in life. I am not sure where to begin, so any advice is appreciated. Has anyone had any luck with Search Squad group on facebook? Thanks in advance for any help. William

I'm looking for a sibling born in Florida1970. My mom had family in Pa. She says that her baby was adopted from St. Petersburg. She was 13. Shari is her name