When is the latest to try to get pregnant after ovulation day?

I have not had a period, for over 18mths, the gyn gave me a progesterone to take and then clomid after 3 cycles I did not ovulate, but this cycle on day 18 my progesterone levels were 8.9 and on day 21 80…….wow, but can you bel my partner has been away! So I am devastated, it is day 25 is it to late, and now since I have ovulated will I get a period ! plz advise.