Slept with guyA one time on June 8th 2017. Took a pregnancy test June 22nd (was negative) Started period few days after negative test. Slept with guyB any & every time after June 8th. Found out I was pregnant- I was unsure of my period dates in July..... Ultrasound put my LMP as July 25th. Making my due date May 1st 2018..... Is there any way it could be a mess up and be guyAs baby? I need it to be guyB but i’m So stressing out over it!