Ok here goes. I had unprotected sex Jan 27 2013 using pull out method with guy A. Guy B unprotected sex never pulling out frequently since then. March 18 had ultrasound said 6weeks 3 days due date nov 8. Another ultrasound April 16 10 weeks 4 days same due date. Is it possible Guy A is father? Or for sure Guy B? Please no judgmental comments as I know I've made a mistake and I'm paying for it now.

No way to tell. You will have to wait until the baby is born to do a DNA test.

Too close to tell. It could be either.

Too close even though it's 19 days before ultrasounds says I conceived?

I got pregnant on may 22 2008 and my due date was February 27 2009 but I didn't give birth until March 6 2009... I measured different at every Doctors appointment. They changed my due date several times. With this being said, there really is no way to tell. You will have to have a DNA test when the baby is born.