I am 6 weeks 4 days pregnant through ultrasound that being said bringing my period to august 1st. I actually remember it being august 5th but close enough. I had intetcourse with guy A august 5th then woke up with a heavy period. After that I was with no one until august 13th guy B and everyday after. I found out I was 3ish weeks pregnant with a conception indicator on september 5th, being august 15th. My doctor said I would have gotten pregnant 14-16 days after my period so (august 1st) being august 15th again. So she basically ensured me it would be guy Bs baby cuz sperm wouldn't have lasted 10 days especially through a heavy period... But every body is different so is it likely she's right? Or could conception have been on my period? I feel like I know in my heart the answer but now looking into the non invasive paternity test through dna diagnostic center... Any opinions or advice?