Is my Cycle calendar off by one day???

My calendar is showing that today is my ovulation day, but yesterday my cm was fertile (a lot of it and sticky clear) and my BBT was 96.8. I know that your BBT goes up the day AFTER ovulation. Today's BBT is 97.4. Is my calendar off by telling me that today is my ovulation day not yesterday? If so- how do I fix it? My SO and I had sex yesterday and want to know the odds of my being preggers 😄