Spotting 4/5 DPO question!

Trying for my fifth pregnancy (three kids, one miscarriage). I’ve never experienced mid-cycle spotting and never had IB with my other pregnancies.

The last two days I have had pink CM (4dpo) and brown CM (5dpo). Only when wiping. Seems too early for IB but too late for ovulation spotting.

Anyone have experience with this at 4/5 DPO, either ending in AF or pregnancy?

Here’s my chart. I believe i ovulated one day early than Glow suggests.