Should I contact a father who doesn't know I exist?

If you don't contact him, how will he ever know you exist? Would it be fair to keep someone from their parent, if the parent wants contact with them? I realize that's a big "if," and that you risk rejection (which I had when contacting bfather), but you could be wrong no matter which assumption you make.Rather than call I would say write a letter, give him time to absorb the information, and put the ball in his court. I think a phone call can really put someone on the spot, and you don't know what situation they're in, whether or not it's a good time to talk on the phone.Good luck.