I had sex with guy #1 11-13 of june and guy #2 june 22nd my doctor told me my conception dates could of been through the 5-13 of june.. is there anyway my doctor could be wrong about the conception dates and me be pregnant by guy #2?

Maybe/legal issue: The answer may become a legal issue since the real father will have parental rights. Non invasive paternity testing (NIPP) is a technology based on detection of fetal cells (DNA) in the mother's blood. A variety of specialty labs offer this service and cite the ability to find such results as early as 8-10weeks into the pregnancy. Early estimates of due dates/conception times are sometimes off.