I've been with my boyfriend now for a little over a year and a half. Me & my boyfriend broke up and I slept with another man. My last period was June 9th 2011. I slept with the second guy on June 20th 2011. I fount out I was pregnant on July 12 2011. I'm 6 weeks and 3 days pregnant today! Who could father my baby? My ex or the second man?

It is impossible to tell who the father is with dates this close together. A DNA test will have to be done after the baby is born.

The second guy only latest a minute?

the second guy only lastest a minute?

Doesn't matter, as long as there is seminal fluid there are sperm.