Any OPK experts about?

[AutumnStarOfWonder]

Just wondering if someone with a bit of wisdom can help me out. I usually ovulate around day 15/16 and get a positive OPK on CD15.

Today I got a strong positive (on CD13) in the early afternoon and a negative at about 7pm. I double checked with a CB digi OPK and got an empty circle.

Could I have just caught the end of the surge? Or could urine have been too diluted this evening? I usually get sore breasts immediately after ov and they feel normal at the moment.

Keep taking the tests and DTD. I got a positive (same as control) 2 days ago, then negative in the evening. Negative the next day but then another positive today (darker than control) so I'm hoping to O today/tomorrow. Are you temping?

Thanks lady. It was a very dark positive. I'm not temping so no way of knowing for sure really. Will test again tomorrow I think.