TMI!! pic included!

I had a C-section 6 days ago. I've pretty much stopped bleeding other than spotting here and there (I think it's due to breastfeeding?)... so I just went to the bathroom & when I wiped it felt very.. mucusy? So I kept wipping and out came this. 😳
This is my 3rd c-section but I've never experienced this. Could this be my mucus plug? Should I be worried?? 
I haves been feeling some type of burning sensation around my insicion when I sit up & stuff.. I think that's why this worries me.