WARNING This is VERY IMPORTANT?
Significant liver, kidney disease Thrombophilia Hypothalamic-pituitary factors: Hypothalamic dysfunction Ovarian factors Polycystic ovarian syndrome Anovulation Diminished ovarian reserve, also see Poor Ovarian Reserve Premature menopause Menopause Luteal dysfunction Gonadal dysgenesis (Turner syndrome) Ovarian neoplasm Tubal/peritoneal factors Endometriosis Pelvic adhesions Pelvic inflammatory disease (PID, usually due to chlamydia) Tubal occlusion Tubal dysfunction Uterine factors Uterine malformations Uterine fibroids (leiomyoma) Asherman’s Syndrome Cervical factors Cervical stenosis Antisperm antibodies Insufficient cervical mucus (for the travel and survival of sperm) Vaginal factors Vaginismus Vaginal obstruction Genetic factors Various intersexed conditions, such as androgen insensitivity syndrome