Should I start taking my two a day now? :)

Jaimee
Been taking opks since my period stopped, they've been basically the same color since but today I got one that was way darker! :) I haven't had luck with having positive on opks since I started taking them, and I started metformin about a month ago. 
Is is time to start taking one in the afternoon and one at night? 
Add to the comments how you take opks if you'd like to share your story. :) 

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