It seems simple: an egg + sperm = one embryo. But if your sperm is "few, vague and abnormal" and your woman is premenopausal at age 37, things start to get complicated.
Alina
Fran
Gloria
Ginecólogo
Chica 25 Fiesta
Chica Emo
Koldo
Guillermo
Doctora
1993
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2023
1958