Ive been dating the same man for 1 year now. We have been having unprotected sex this whole time, the last time being June 6th. I had unprotected sex with another man on the 10th of June. The first day of my last period was on the 26th of May, but it was very light and lasted about 4 days. I tested positive yesterday the 28th of June and the results came within seconds. Could I be pregnant from the other man? Is it even possible to test positive that soon?