When blood clots are being passed, this is usually an indication that foetal matter is being passed from the body, especially if greyish tissue is present in the clots.
Falling hCG Levels
When doctor suspects a miscarriage, he/will order blood work to check the hCG, or human chorionic gonadotropin, levels. These levels are present in a healthy pregnancy approximately seven to eight days after conception. If the levels of hCG in the blood fall off dramatically over a period of days, it could be a case of miscarriage.
Loss of signs of pregnancy
You may have loss of signs of pregnancy such as nausea or breast swelling/tenderness after miscarriage.