How long for an opk +ve line?

Question

I've been opk testing this month for the first time this month but didn't get anything close to a +ve.

When I use the strip, the control line appears immediately, as soon as the pee washes past it, but the test line stays forlornly blank. 
For those of you ladies who have had a strong +ve, how long did you have to wait for the test line to "develop"?

Test line appears:

Answer

Try first repsonse. Ovulation test they work amazing i started testing right after my period ended and  6 days after my period on 30th of September i had a positive i had faint lines starting saturday and by sunday my lines were getting darker but tuesday i had a full out positive ovulation test

Answer

I always have a faint line at least. It doesn't really get progressively darker for me until the day, where it's positive at 11am, then darker around 3pm then positive but lighter around 7pm.. then negative at 9pm.

Answer

I would nearly always get a faint line the days prior to getting a positive. Are you not even getting that? I'd maybe get different test. The digital ones are good cos harder to miss read

Answer

Depends on which day I test. I test over a few days and the lines get darker gradually over those days. On the first few days it takes a while but as I get nearer the Lh surge it appears quicker.

How long for an opk +ve line?

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