Spotting 5 dpo

Danica

Hello. We got it confirmed by intravaginal ultrasound that I ovulated 5 days ago. I noticed some super light spotting today. Pink in color and stopped after an hour. My cycles are sooooo regular that this has completely thrown for a loop: my period is due in 12 days but from what I’m reading, it’s too early for implantation. Anyone have experience or words of wisdom for this? I’m freaking out that something could be wrong.

Also I have no STDs and haven’t had any intercourse in a week. TIA