Is Decreased Ovarian Reserve Related to an Increased Number of Previous Early Miscarriages?

Inclusion Criteria: 1\. All participants with at least 1 previous pregnancy, who are assessed in one of our clinics (ART Fertility Clinics Abu Dhabi, Al Ain, Dubai) Exclusion Criteria: 1. Severe male factor (azoospermia, cryptozoospermia, severe oligoasthenoteratozoospermia (OAT)) 2. Severe Endometriosis and adenomyosis based on positive anamnesis or ultrasound performed in our center during the first consultation 3. Uterine abnormalities (e.g. fibroids, different degrees of uterine septum), diagnosed by ultrasound 4. History of ovarian surgery, chemotherapy, or radiation therapy 5. Known genetic disorder or chromosomal abnormality 6. BMI \>40Kg/m2 7. Currently using hormonal contraception or hormone replacement therapy