Can I add a 33??????

Today, I did something scary and crazy, I thought why not look up my real father on facebook, thinking there is no way that he would be on it. So surprise surprise he is! In major shock and to say honestly maybe a little light headed effecting my ability to thinking normally I emailed a woman on there that I thought might be his sister. I haven't' talked to anyone from that side of my family (if that's the right word) since I was 18. The woman that I thought was his sister, is his cousins wife, She informed me that my father, grandma and extended family are all doing quite well and that there is a large amount of them. However, while she was updating me on the status of this family, she never once asked me who i was. So I politely thanked her for the update and said I am very excited for how well everyone is doing, but did she know who i was? No answer.... Now I am stuck, I am sure I have brothers, sisters, maybe even nieces and nephews that I don't know, a father, grandmother, aunts and uncles and a large amount of cousins, yet the last time I tried to talk to my father my grandmother told me he wanted nothing to do with me, he had moved on and he was happy. Do I take that chance to be rejected or do I walk away knowing they are all happy and healthy? What do i do?

33. Find biological Father