Almost thumb sized clot 16 days postpartum?

Alex

I’m 16 days postpartum from a VBAC and I passed this clot last night. My bleeding has been slowing down for the most part and I have never passed a clot anywhere near this size, even in the first little bit after having him or my older son. I only had some very tiny ones at the beginning but that was a while ago so I wasn’t sure if this is normal and I dont have an appt with my dr until next week. Should I be worried?