I am on my third month testing for ovulation. First month I got strong positives on day 10 and 11. Second month strong positives on day 11 and 12. This month day 10,11,12,13..etc have all come and gone and now I am on day 16 and still have not received a positive opk. Does this mean I probably ovulated but the test for some reason didn’t pick it up or is it possible my ovulation day can be this late? I don’t know what to think! I have pretty regular periods as well.