OPK test question....

These test really confuse me and I think a lot of others. So my question is....
I had OPK test Monday, Tuesday and today (wednesday). Is it supposed to be positive this long? Have I ovulated yet? I don't know which day to count as the day I ovulate. Monday was CD13, Tuesday was CD14, and today is CD 15. Although, today it showed up right away and line was really, really dark! The others were darker than control line as well but didn't show up so instantly and as dark. I just want to know where I am in my cycle!!! I usually don't notice the EWCM or do any temping.I also usually cramp alot at "O" time for about a week. This time it was only one day...kinda weird.

Quoting "M'Lissa~gettin jiggy":“ These test really confuse me and I think a lot of others. So my question is.... I had OPK test Monday, ... [snip!] ... the EWCM or do any temping.I also usually cramp alot at "O" time for about a week. This time it was only one day...kinda weird.”

on www.peeonastick.com it says that you should rely on the first positive opk. Meaning you should O from 12-36 hours after the first positive opk. If I was you, as long as you are getting pos, just keep bding!