Is this positive opk?

Question

This opk is from cd 15, darkest one then it faded out but was still fairly dark. As I approached cd15 the lines got darker now cd 18 and 19 (today) no line at all.
​I know it has to be dark or darker but could this be my positive opk?
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Answer

That's reassuring as they have faded out to no line at all now. I will bear that in mind for next cycle if this isn't our month
​Here are the days we bd so we should be covered shouldn't we? 
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Answer

Are you charting?

Answer

On the cheapies -  that is the darkest line I get so that is why I use digi tests too . I got a line just like that this morning which was positive (peak) on the Clearblue Fertility Monitor (CBFM)
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​Before I got the CBFM I used to test 3-4 times a day around CD12 on wards as I O around CD14-15
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​I never missed an O, timings were 
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​FMU - CB digi
​11am ish - cheapie or digi if very close
5pm ish - cheapie
​9pm ish - cheapie 
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Answer

Anyone else?

Answer

I was testing once until the lines started getting darker then I was testing 2 times, cd15 this was the 3rd one I done next morning (cd16) they started to fade out I'm cd 19 with no line on opk whatsoever so I think this would have been my positive.

Answer

I suppose it could be but I'd keep testing just in case. Do you only test once a day? If so-what time do you take it?

Is this positive opk?

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