What did our ancestors do, before the pill, condoms, IUD's etc, if they did not wish to get pregnant,

Saying 'No' probably did not work either.

I guess that the best solution was to get really good at both oral, and anal sex.

AND the man would be happy................no pregnancy risk if she could satisfy his cim and anal needs.

Nowadays, perhaps, the ladies are not as good at cim etc as they should be.