Passing tissue

Riley • Army Wife 💛 🇺🇸 TTC Rainbow baby ❤
HEADS UP, THIS IS SORTA LONG, SORRY! So about 6 weeks ago I had my miscarriage, I was 11 weeks but the sac and fetus was only measuring at 7 weeks. It was my first appointment and my doctor was very uninterested in telling me about my miscarriage and what would follow, so I ended up going home to Indiana to see family and had my miscarriage while visiting my father in the hospital because he happened to have a heart attack while I was there. I went to the ER department and they removed a few large clots and gave me fluids and told me to check back with my normal doctor and that at that moment a D&C wasn't needed as long as I progressed. Well, two weeks later I go to my doctor and discuss what had happened and I asked if an ultrasound should be done to see if the tissue came out completely or to see if there would be any future issues, he completely dismissed me and saw me for maybe 5 minutes. I thought maybe I had finally had AF back today but I'm passing tissue but not much blood at all. Is this something I should be concerned about or is it just old lining from before finally making it's way?