I know its possibly i silly question but i was wondering how many blue lines should be on a CBFM stick. I know your not surpose to read the sticks but you just can't help it i am only asking because i have been getting highs since CD6 and i only noticed one line but now on CD 15 still getting highs but there is now two blue lines.

Any info would be greatly appreciated.


  • the montitor measures two hormones thats why they are two lines, it measures eastrogen and lutinizing hormones, i cant remeber which ones which but i found just after both lines were as dark as each other i got my peak (i think) eastrogren peaks just before LH which gives you the extra fertile preiod before an OPK would

  • Ok thank you for that Piggypops.
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