IB bleeding at 5dpo? Help!!!

I am currently 9dpo, I wholeheartedly believe I had implantation spotting at 5dpo, it felt like cervical mucus, with pink and light brown in it. It was only there once, when I wiped then it was gone.

I’ve NEVER had midcycle bleeding even after my miscarriage Christmas eve last year I didn’t have any odd bleeding midcycle.

My ONLY symptom has been extremely sore breasts since 6dpo. At 6-7dpo they were just a little tender, 8-9dpo they have been VERY tender, just wearing a bra hurts.

All hpts are negative this morning still and I’m getting very discouraged, has anyone had any experience with IB and testing?

If you’ve stayed with me this long thank you!!!