Period or pregnant?

Hi!

Can I get opinions?

Five days from expected period I got light pink blood when I wiped, barely anything there .

The next day , same thing so I decided to put my cup In just In case for over night . when I woke up the first phot is what was in the cup and it was just a long mucusy strand with a lot of darker brown on the side but no clots.

All day since then , when I wipe it's just super light and pale pink .(second photo)

I've had cramping and nausea

I'm still 3 days out from "expected period"

What's going on ?