Quoting justayounggirl1:" I'm single. my parents dont know about how I got pregnant. My dad would more than likely kill the guy ... [snip!] ... make things even more terrible. He's got a history. I mean with sd's that won't e involved what do you say to family about it?"
Well my opinion, its not really your parents business who the father is unless he plans to be completely involved. In which case they'll meet him and know who he is/how is he is.
Unless he raped you and your planning on pressing charges or something.