Hello, i found out i was pregnant July 18, 2017. I had my very first ultrasound July 21,2017 and i was 6 wks 4 days. My EDD is March 12, 2018. My big worry here is that i am married and my husband and i were trying to have a baby. We always have unprotected sex but like everyone makes mistakes i made the big mistake of sleeping with a friend on June 5, 2017. We used a condom and it didn't break. Is there a possibility that my unborn child could be the friend i had protected sex with? I have very irregular periods. It jumps from months. Please someone help me out. I did the prenatal paternity testing but they haven't found fetal dna in my blood.