Don't know what the heck is happening this cycle

Ladies, I'm at my wits end with this cycle. It's CD 22 and yesterday and I got almost positive OPK's (see lineporn post) but never got a positive. I test like 5 times a day, so I really don't see anyway I missed my surge. Then this morning I wake up and see my temp took a huge dip (the biggest dip I have ever personally had), and still no positive OPK's. They OPK's go in-between almost positive and completely negative. Do ovulation dips happen? Could I have one without a positive OPK?Chart: http://ift.tt/2rkJuMw via /r/TFABChartStalkers http://ift.tt/2rPUx46