I’m worried!! Pleaseeeeee help

Elizabeth • Pregnant with baby #1 👶🏻

Hi !

For the past 2 days I’ve had sensitive boobs and nausea (I never get sore boobs before my period)

I’m currently 12dpo approx and I’ve got a back ache, I went to the toilet and when I wiped I had super light brown discharge. I’m probably out this month, but does anyone know what this means? Should I test ? Or is it the evil queen getting ready to show up.