Ovulation test - please read post.

So I ovulated cd 14 on my cycle confirmed by clearblue digital and cheapie opks. Then literally went blank on opks 3 days later then got this on one from blank a few days back? I know it's an ovulation test but what do you think? Couldn't see second line few days ago 8dpo and with half hour hold tonight urine. Cheers lovelies x

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