What are the reasons of miscarriage and how can i cope?

Miscarriage: Mostly unknown, but if occurs in first trimester, it is mostly due to chromosomal abnormalities in the baby. Other possible causes are infection, exposure to environmental hazards, hormonal problems, uterine abnormalities, incompetent cervix, smoking/alcohol/illegal drugs, immune system abnormalities, severe kidney disease, congenital heart disease, uncontrolled diabetes, thyroid disease, malnutri.