Determinants of Repeated Spontaneous Miscarriages and Unexplained Fetal Deaths

Inclusion Criteria: * couples whose wife is over 18 and under 40 inclusive, * couples having undergone at least 3 unexplained SM in the first trimester or an FDIU in the trimesters 2 and 3 of pregnancy (excluding funicular and fetal causes and proven preeclampsia) * the man must be over 18 years old. * each member of the couple must consent to the investigation. * Subjects benefiting from a social security scheme. Exclusion Criteria: * couples where the woman is under 18 or over 40, * couples whose man is under 18, * identified cause of SRM or FDIU * Inability to consent for one of the members of the couple, * refusal to participate for one of the members of the couple. * treatment with anticoagulants or anti-aggregating platelet for women. * Person under legal protection * Subjects not benefiting from a social security scheme * Refusal to participate