There are no existing polls. That is for creating one if you’d like.
Yes, you can determine the paternity of un unborn baby but I’ve heard it is very expensive because you have to obtain the DNA of the baby while still in the womb. Plus you have to have a father in mind and get his DNA sample also. You can’t just do a test and say the father is John Doe. You can only say a certain man is or is not.
I guess the best person to contact would be a geneticist. An ObGyn could probably refer you to one.