Kristiw is right, but I think you are asking because you want to know now!! (Can't say as I blame you! I'd want to know , too!! ) How about asking the potential dad or dads to split it with you? So everyone will have it settled in their minds! If you only want to know yourself, there maybe something though your local hospitalor Social Services (usually they are yellow flyers saying DNA on the front. If you are on any SSI or Soc Sec. The same office should be able to help you ). They may wait until the baby is born , though. So if it is really urgent you can ask friends or family, if they would contribute a little towards helping you. First try the others... Good Luck!!
