On October 11th I had sex with guy #1, then I had my period on the 25th of that month, and it lasted for seven days. I had sex with guy #2 on November 5th, but I missed my period by the end of that month. Now I'm due August 1st, and I'm 19 weeks now. Could guy #1 be the father?
As you had a period after guy #1, guy #1 is most likely not the father.
Updated on March 14, 2018