Explanation to period in a sterile society

The world I'm building relies on the fact that the whole population is sterile, and all babies are conceived in vitro. They do not have bellybuttons anymore but they still have genitals, and do not know how their ancestors used to live, how they reproduced, etc.

The sterility is not due to some disease, but done to the population : I was thinking, either to the foetus (hormons) or the babies once they are born (in taking the gonads with surgery or with an implant). It can't be with DNA modification.

If one woman was to get pregnant in this world (with an unsuccessful surgery, a wrong implant, etc.), she'd have to have her periods. But either she'll be the only one to have her period, and it'd be weird from the beginning, or almost every other women have their period too, but I need to find an explanation to why they lose blood each month with no logic explanation (for them).

The book The Children of Men by P.D James shows a society that became sterile one day with no explanation,

the woman that gets pregnant in the second half is one of the people that weren't tested for fertility, because she had a health problem (asthma if I recall). All women still had their periods with no questions, but they knew what it was.

posted almost 6 years ago

Lyzvaleska‭

1 reputation 1 0 0 0