Piggling
Well-Known Member
When OPK has dark lines, you may O same day or within next few days.
Reason is OPK test the surge in LH which is the hormones just before O.
So when you have dark lines on OPK, does not mean you definitely O same day, could be next day or even next few days. Thats why some sources recommend BD on OPK turned dark day, and then continue for the following 2-3 days.
Only a shift in temperature can confirm O has taken place, not OPK.
Hope this helps.
Reason is OPK test the surge in LH which is the hormones just before O.
So when you have dark lines on OPK, does not mean you definitely O same day, could be next day or even next few days. Thats why some sources recommend BD on OPK turned dark day, and then continue for the following 2-3 days.
Only a shift in temperature can confirm O has taken place, not OPK.
Hope this helps.