my "son" has found me! 22 years...

Hi Everyone, I was contacted on Monday from the adoption agency saying that my "son" wanted to have some sort of contact with me. Now I am just waiting. I filled out the consent to release information (saying what info he could have of mine, which was EVERYTHING) and she is waiting on getting his back from him. I am amazed at how many emotions I had. When I first got the message Monday night, via facebok... I seriously felt like I was going to faint. Since Monday I have my moments that feel like I'm walking on clouds, to almost anxiety attacks. I feel shameful, guilty, happy, nervous, excited, curious, etc... So that is where I am in the process, waiting on his information... then if I get his information, and I know he has mine, should I make first contact? or wait for him? I want to do things at his pace as I don't want to intrude on his life, but he is the one looking for me (I guess for quite a while)... So i am also feeling confused, misplaced, etc... Any advice on the "waiting" period would be greatly appreciated. Thanks! Ronney