Stopped spotting finally for a week after 8 weeks after miscarriage, now started spotting light brown again is it normal? is there anything wrong?

Needs evaluation: I'm so sorry to hear about your loss. The spotting is likely a new period starting; did you have an ultrasound after the miscarriage? If not, you may need one to make sure all tissue was expelled by the uterus. This can also cause persistent spotting. Other things that can cause this are use of progesterone-only contraceptives. See your gyno if you haven't already for a check up.