Cycle Chart help!

I normally have a 24-25 day cycle. I had a miscarriage and d&c; in December and since then my cycles are 25 days. Before my pregnancy there were mostly 24 days. This cycle has been odd. I was projected to ovulate on the 15th (glow is usually pretty accurate for me) but my clear blue digital was showing low fertility until the 16th. It was low from the 10th-15th. Then high (flashing) for 9 days after. I even tested twice a day and never got a solid.

The weirdest part was on the 16-19th I was spotting... very light pink. I usually never spot until 2 days before AF comes. I no have no idea when I ovulated or if I did. I was originally supposed to get AF yesterday, but my chart updated since my ovulation tests were showing low fertility. Now it shows AF eta as 5/3, but not sure how accurate that is since I have no clue when I ovulated. Has anyone else experienced this? Thoughts?