Originally Posted by DoulaLC
I think she may be referring to temps during the luteal phase. Temps will stay slightly elevated until the next period when they will drop, but if they continue longer, pregnancy may be a possibility. Of course, there are a number of reasons why a temp can be up and what is slightly elevated for one woman may not be for another.
Also, unless someone had been charting their temps, there would be no way to know if a pattern was showing that would lead to suspect this could be the cause as individuals will often have some variations.