ladies? any ideas? -- weird cycles 🤦🏽‍♀️

Elizabeth
My husband and I have been trying to conceive and I have to say these last two cycles have really driven me to the point of wanting to pull my hair. Last cycle, AF was 7 days late but was very light (lasted 5 days with mostly spotting. Typically have a heavy period for 7 days). Thinking maybe it was just a shift in hormones, I went on about life. I used my OPK this cycle and got a positive on CD 16 (of a typical 27-28 day cycle) and after BBT charting, I assume I ovulated on CD 18. Now here we are on my next cycle, and once again I was late (3 days). This morning I did my normal routine (temp check, CP check and CM check) and after checking my cervix I realized there was blood on my fingers. So far, it has only been spotting (mostly when I wipe and check cervix). I am utterly confused at wth is going on w my body and definitely would like some feedback! I have also attached my chart.. thanks ladies ! P.s. Scheduled a DR appointment but feedback would ease the waiting game.