Well, theoretically possible. She was obviously a woman of the temple and goddess that we have just rebuilt and dedicated. I think it's possible that things were once similar there to how they are now with us. The contraceptive thing may have come later.
But why should she have exposed her son then? The current children are also in the care of the temple. why should it have been any different in the past?
But we will find out. Obviously this is part of the main story. There must be an interesting story behind it