TMI… I’m confused.

Last Thursday AF was due (October 12). Tested the next day with two digitals and I got positive results. Since then, I’ve checked my HCG levels with strips and they were very faint.

Today I’ve been crampy and I’ve had a bad headache and this evening I wiped and saw this.. could this be a chemical? Or spotting? I also attached a photo of my glow calendar.

I know I could have ovulated very late. Monday I had my HCG checked and it was only 31.

Would really love some support and guidance ❤️