TMI!!! CM with a tinge if red/brown???

I’m 15 dpo with high temps, symptoms for past couple weeks. Negative test 3 days ago. Thoughts?!?!

Update: I️ started AF I️ believe. No tampon yet just when I️ pee and have cramps. My BBT temps are still way high. Should I️ expect a drop tonight? See chart attached. Previous high temps at beginning of cycle we’re from my miscarriage so I don’t know what’s normal for me.