Am I Pregnant If I Had Unprotected Sex Around My Ovulation Day And My Period Is Late?

Hi am pregnant my period came on the 1 of April and ended on the 4 of April I had unprotected sex on the 10of April while my ovulation day was on the 11 and I had sex on the 13 15 17and 20of April and yet I don t know how long am pregnant and my period was to come on the 26 of April