I had my miscarriage 4/10 & bled for a week. today i noticed light spotting. i am very confused. what can that be?

Miscarriage : If your periods were regular, monthly before you got pregnant, you would expect your next period to begin about may7-10. However, the pregnancy site of implantation from the miscarriage is still healing, and this spot may still cause a little bleeding up until this first normal cycle begins.

Residual: This is probably just residual bleeding; however, definitely call your gyn.