Early sign of labor?

Jade • 💍12.04.2015 RJH02.03.2018💖 baby#2 due June 2021🥰 baby Girl! 💗 Mom of girls!

So earlier today we had my shower my back was throbbing the whole time but I got though the shower now I just went to the bath room and I see this brownish discharge that looks like mucus am I’m going to go into labor soon is this a sign? I don’t want to scare my husband or anyone else for the matter but my back is starting to hurt again...