| http://www.w3.org/ns/prov#value | - Sometimes, the female partner's cervical mucus is not compatible with the male partner's sperm Women with mild endometriosis (a condition in which the lining of the uterus can become attached to organs such as the fallopian tubes, preventing the passage of eggs) Anatomical problems with the uterus or cervix, which prevents sperm finding the egg Vaginismus - which makes penetration painful
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