I know this is confusing, because when you count back 6 weeks and 6 days from Nov. 19, it looks like guy #2 is in range. But if you're 6 weeks 6 days pregnant, that means you got pregnant 4 weeks 6 days ago. You get two "free" weeks because your official pregnancy dates back to the first day of your last regular period, not the day you actually got pregnant.
Unless your due date is off by a couple weeks, Guy #2 is not the father. Google "reverse conception calculator" and put your due date in. Sex between Oct. 12 and 17 is most likely, leaving guy two a couple weeks behind that.
How did you arrive at your due date? Did you have a sonogram that confirms it, or are you going off something else?