OPK Help!
Help! I use cheap OPKs so I can test more frequently, and I got what looked to be an almost positive. So I took one of the FR brand tests since they're the more expensive/supposedly more reliable source.
(Some background info: I don't ovulate on the same CD each month, always different. Today I'm CD 22. Last month I ovulated on CD 20.)
My question is which one is more reliable?
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