8 day period with black blood, 2 days later red blood heavy with black clots sized like a tinned round cut carrot, is this normal?

Well. It doesn't sound normal for you. The variations on the blood itself, dark, light, etc are hard to make anything from. We ask about volume, problems relating to anemia and timing; its a remote chance but if u were late could be miscarriage. Not unusual to have heavy and irregular periods thus the pill so commonly used. I wouldn't make too much of the particulars since its done; good luck.
Doesn't sound normal. If you re no longer bleeding/discharging, wait another month and see if this happens again. Call your gyn for eval if it does or if you are still bleeding even now. There could be a blockage of your menstrual flow or infection.