13dpo. Spotting?? Can you have spotting this late ?

So I had a miscarriage November 3rd and my first cycle after the miscarriage we started trying again but I only bled for half a day counted that as my af, ovulation tests showed I peaked on the 22nd and ovulated on the 23rd. I’ve never started a period with this color it’s typically darker then heavier dark red. This just came out of nowhere 🤷🏻‍♀️ other then the fact I’m supposed to start tomorrow but no real period cramps just a small ache in my uterus area.

Is this my body still thing to get back on track after the miscarriage? I did take a test yesterday morning and it was a bfn?

What do you guys think?

Either way I stocked up in ttc products I’m praying if this is af that we get our rainbow next cycle 🤞🤞🤞