My wife recently took two pregnancy tests(both with positive results) after not getting her period when she felt she would. After doing a little research I am confused and concerned... Her last period was on November 2nd and prior to that she had been on a fairly regular 28 day cycle. We only had intercourse once during the month of November and that was on the 26th. Which seems too late in the month to match up with ovulation. Should I be concerned that she was unfaithful or are there other factors I need to consider? I obviously feel awkward asking her if she was unfaithful if there are other possibilities. Please help!