We think we found her... help?

Thanks for the advice, just to be clear about a couple things: -I haven't said a word to him about finding or contacting anyone since the day we found the information, that is why I came here. This is new territory for me so I just kinda wanted some tips on how to handle it. I know it is his life and his choice and he'll talk to me about it if/when he is ready. -HE told his a.mom, not me. I haven't spoken to her about it at all. -For him being left at the hospital I left out a couple details that I didn't think were very important but I guess could be: His a.mom worked at the hospital and was having trouble having a baby and was told a baby was left, I don't know the exact details of that but that is why he didn't go into the system. -The only thing he has said about meeting her is that he wishes he could meet her without her knowing that it was him before he "meets" her for real.