passing tissue after miscarriage

Laur
After a long 3 week wait, I started bleeding last Saturday, had horrific pain on Wednesday and finally passed our baby on Thursday night. Yesterday I was bleeding, as expected, but have been passing tiny pieces of tissue since (along with some minor cramping.)  
This is my second miscarriage and I don't remember having this happen with the first one. Has this happened to anyone? Where you're passing tissue after the baby? 
Im not That worried.... Yet. I just hope everything will come out and i wont need a D&C. My follow up ultrasound isn't until Jan 17th and the Dr's office is closed till Tuesday due to the holiday. Ugh.