4 DPO Spotting

L • 26, due with 🌈👶🏻 August 7th

So I know implantation spotting would happen 6-8 dpo, but I’ve never had spotting outside of my period week. This morning I woke up to the tiniest bit of blood, bright pink. Maybe two or three drops. Haven’t had sex in like 3 days so I don’t think it has anything to do with sex. Is this normal? Could I have read my ovulation tests wrong and ovulated earlier? Has anyone had 4 DPO and end up with BFP?