Almost positive OPK 24 hours after ovulating?

[Savelli]

I had an almost positive OPK 24 hours after I think I ovulated (based on EWCM)- is this possible, would the LH still be high? I had an equally dark test as control line on a Boots OPK.

I always used to get my EWCM about three days before I got my positive OPKS and sometimes I would have OPKs that stayed positive for over 24 hours.

In terms of guessing when ovulation occurs I imagine the OPKs are much better indicators than CM. The most fertile period is the 3-4 days before ovulation hence why EWCM usually appears then.