Pictures of my newborn without my consent

My husband and I don't want our baby on facebook or any other social medial until we decide.

If any other person (grandparents, uncle, etc) take pictures with their cellphone we are going to lose control of what's gonna happen next (if they are sending the pic to someone else or post it).

I was thinking maybe let them take pictures with our camera (that I'm bringing to the hospital) or our cellphones.

I just know in advance my mom will be upset. My family lives 5000 miles away and for sure they will all want to see the baby. Since my mom is the only one who's flying here for that day she will probably want to send and post pictures.

Sure I tell them now that they can't take pictures. Or wait til the baby is born.