The last time DH and I had been intimate was January 21st and I supposedly(according to ultrasound) conceived on February 14th. I'm actually not sure if he'd want to do a paternity test. We were visiting the subject yet again the other day and he said "Well, we don't know for sure that he's not mine yet." I'm SUPER curious. So, I think I'm going to use $12 that we have extra. I will be on cloud nine FOREVER if he's Billy's and not Ray's. I hate thinking that he's most likely Ray's. That means he'll have to be involved if he so chooses, to some degree. I don't want to see his face ever again.
February 14th is your estimated LMP... your conception date would be (on average) 2 weeks later than that to give you a due date of November 21st. So that would have your conceiving (ovulating) around February 28th and that's too long after dtd with your dh to conceive. Sperm can only live a week at the longest. So I think your mystery is solved... sorry!