Implantation or AF?!?

Nadia • Wife💍 Fur mom. 😺😺 TTC baby #1. 👶🏻💜💙

Ok, my cycle is usually all over the place, ranges from 30-33 days on average I’d say.

This month I’ve had no positive OPK’s. AF is due today but for the last 3 days I’ve had VERY light spotting/discharge. It’s light pink/brownish which I know can be implantation.

I’m just confused because I took a preg. test and it was negative.. :/ usually when AF shows up she don’t mess around and it’s heavy until theist day. .. :/

Any advice ??