hi first of all, there is no such thing as a silly Question!! That is what this web site is for Questions or concerns
you need to ask or find out. there is only one way to know for sure who the father is if you are indeed pregnant.
A DNA test. Eigher an intrauterine one Where They stick a needle in for the fluids Can't remember what it is called at the moment, or wait till Baby is born, and they will cotton swab Babys saliva. Either way if the men do not want to own up at the end who cares. Nothing wrong with being a single mom. I did it for 7 years before i met mr "wright" after leaving an emotionally abusive relationship. Good Luck xoxox