Pink discharge 29 weeks

Stephanie • Boyfriend: 12/29/2014 - Forever :) Baby Boy - 09/25/2016 and pregnant with baby #2 due 11/20/2017

I just had pink discharge and I'm 29 weeks pregnant today. The discharge was super thin, and it wasn't a streak of pink, the whole thing was just light pink in color. Anyone know what this means? Second baby and I know I can feel him in my pelvis already. And no I have not had sex or an exam recently.