I have a 28 day cycle. On day 12 I had sex with guy A and on day 14 sex with guy B. Both unprotected and ejaculated in me. Who is the father?

Either one. You'll never know until the DNA test is done.

We can't give you an answer. The dates are too close, so there's no way to even guess.

Your only option is to have a DNA test once the baby is born.

A serious answer is there is no way to know, at best conception is figured give or take a week, which is a two week period.

So there is no way to know till the child is born and a DNA test is done.

Sorry, conception dates are best guess, never exact to a day