Positive OPK yesterday, negative today...???

Visitor (not verified)
anonymous user
Registered: 12-31-1969
Positive OPK yesterday, negative today...???
Thu, 07-07-2011 - 12:31pm

Well, this is the first cycle ttc #3... My AF is very regular, (29-31 days) I should O tomorrow. Yesterday afternoon I got a pos. OPK but this morning it was clearly neg. What gives??

iVillage Member
Registered: 05-24-2011
Thu, 07-07-2011 - 1:38pm

When you get a positive OPK, it generally means that you will O within 12 to 36 hours.

Lilypie Maternity tickers
iVillage Member
Registered: 01-13-2009
Thu, 07-07-2011 - 4:35pm
OPKs are usually only positive for one day, that's completely normal. It means you should ovulate 12-36 hours after the positive. Usually you O the day after the positive test, so you may be Oing today. Keep an eye on your CM and you should be able to tell. Either way, start getting down and dirty with your man! ;)