weird ovulation

First cycle off of the pill.. On my seventh day of "high" fertility according to my advanced opk. Had a few "low" days first & now this. Was excited at first to get that blinking smiley & now I'm wondering if it's ever going to end.   I guess I should expect it, this being my first cycle off of the pill. Just wondering if anyone else has had these extended periods of high readings. Have heard great things about this test and hoping maybe it's just an off month for me.