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Triphasic means there is a second shift. On an ovulatory chart, there are pre o temps and post o temps, making it Biphasic. An anovulatory cycle has no shift and is monophasic. If u have a second shift after ovulation, it is triphasic. It can be a good sign, but not all triphasic charts are pregnancy charts, and u don't have to have a triphasic chart to be pregnant. I have had numerous triphasic charts and i'm not pregnant.