Hello I’m wanting to know if I should go with Ravgen or DDC dna prenatal testing. I had sex with one guy on June 28, 29 and July 3rd. My last period was on July 3rd. Had sex with new man July 13, 14,16,17,18 and 19th. I didn’t get a positive test until August 2nd. I’m currently 7w2 days based on lmp but ultrasound determines I’m 6w2 days. Who’s most likely the father?