I can totally relate. Usually parents that give their children up for adoption give them up for a reason. Maybe my experience will be of help to you.
I have researched my birth parents and the story looks very shady, so I am thinking of initially sending a letter just to let my mother know that I am okay and I made it out fine, and to thank her for putting me up for adoption. Then if she replies, I'll take steps to meet her in person. Maybe you could do the same with your parents. 1) Research the circumstances and 2) Send a letter to "test the waters" so to speak.
Good luck, Hear Again.
