have I ovulated now?

Samantha
Took opk from day 9 until I got positive opk on day 15 and 16. Then I stopped testing opk. No temp rise followed so I thought maybe my body had geared up to and nothing had happened. Then I've had a temp rise over the last three days from day 19. Does this mean I Od on day 18 and is there still a chance we could have been successful ttc this month?