How do u know how many days post ovulation you are?

Estimate: Well - ovulation usually occurs about 14 days before next anticipated period (if you have regular periods).

Post ovulation perio: The scientific way of proving is to determine your ovulation date by using ovulation kit. The crude method is you ovulate 14 days before first day of your next menstrusl ctcle

Rough estimate: This is difficult to tell outside of monitoring your LH/FSH hormone level for multiple days. But one way would be to determine your average monthly cycle for the past couple of months. Then determine what the mid point of that avg would be and use that. So if you avg 28 days per period then usually you ovulate on the 14th day since the last period. If U are on day 17 likely your 3 days post ovu