OPK lines!!
If an opk has sensitivity of 20ml/u does that mean that there would be no line at all unless there was more than 20ml/u or that it takes 20ml/u for it to be a full positive? I only ask because last time I was pregnant I had a faint line on an opk at 13dpo and I went on to get BFP later that day. I have just peed on an opk at 14dpo and again have a faint line like last time I was pregnant. I really want to go and get a hpt but I am so full of cold :( I have included a pic of the opk (14dpo).

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