Irregular Periods/paternity

[Cabalwars]

It might be odd hearing from a father on here, but here I am in a very extreme situation. My fianc

[Forum-M.D.-SP]

Assuming that the date of the ultrasound is June 19, your fiancee is 13 weeks 5 days pregnant on June 19. Going backwards, she ovulated on or about March 31. When we determine gestational age, it is actually counted from the date of the first day of the last menstrual period, assuming that the woman has REGULAR periods and thus someone with regular periods would have had a period on or about March 17 if they are 13 weeks 5 days on June 19. Even though the actual egg release and fertilization occur two weeks after the last period, we count weeks of pregnancy from the first day of the last period, because that is how we figured out pregnancy length in the old days before we knew about ovulation happening two weeks later and had ultrasound to help us. So a 13 week 5 day pregnancy is the result of an egg having been fertilized about 11 weeks and 5 days ago, around March 31. At 13 weeks 5 days, ultrasound dating is very accurate.

[Cabalwars]

Some signs that tells me its mine.  She had implantation bleeding a couple days before the test on April 21 came out positive.  

Some people keep telling me that a doctor