Nervous

I had spotting 6-8 dpo, 1-2 times each day only with wiping, brown in color, trace. Now today, 12 dpo, had it again once so far, light pink. No cramps.

I am due for my period either Thursday or Friday depending on the app. Each one is off a day for O. bbt dropped down slightly 10 and 11 dpo and went back up this morning.

I’m scare AF is coming anyway but I have never experienced any sort of spotting between periods in my life.

Any insight would be helpful. TIA.