Is the discharge you get before your period starts?

Gabriella • 23 😩🥂🍷• Future early childhood educator • Alice Cooper fanatic 👁‍🗨👁‍🗨🐍• MCC • In love with my boyfriend • 8-2-16 😍🔐❤️🌎💍
So my period is 4 days late and I found this in my underwear today....is this the kind of discharge you get before your period starts?