I felt ovulation pain before ovulation is detected on my chart. Should I change the ovulation date?
When you feel ovulation pain (not everyone does) you can feel it before, during or even just after ovulation, and many other kinds of cramps or twinges can be mistaken for it, so it is not a good indicator for pinpointing ovulation on a particular day. It provides an additional clue, like other secondary fertility signs. Ovulation pain can not be used as a primary indicator for pinpointing ovulation. It is best to look at all signs and the "big picture" when interpreting your chart.