Seriously? On a medieval setting?Mato_
13. Birth control pills
To mu knowledge the only thing that could prevent unwanted pregnancy at the time was going to a witch/herbalist and asking for some poisonous plant-extracts and the results were about 50/50 (or slightly better with a good witch that knows her shit) about the fetus dying or the mother dying. Anyways problem solved and pregnancy canceled.
Birth control pills (or any pills for that matter) and underwear (excluding the age-typical undergarment) in medieval settings are like cellphones in Gotham, they just didn't exist and seem out of place every time you see them.