Ovulation test?

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How much longer until you think I'll have a positive opk? I had a mc at 4 weeks 3 days that started October 5 and bleeding stopped October 10. My system is all off whack so I'm trying to see what's going on so we can try again. I've been using clear blue digital opk but it is difficult to see if hormones are staying steady or are increasing so I bought these. This is my first of this brand so I have no baseline to compare it to. Thoughts?