Keep in mind, women have had to deal with their metaphorical indoor pluming way longer than we've had literal indoor plumbing.
Any menstruating person who's ever had a job, or even left their house, can tell you about the coy dance of slipping a tampon or pad into one's sleeve before scurrying to the restroom. In a pinch, we resort to panhandling hygiene products off of anyone who seems like they might have a uterus of childbearing age. Sometimes (rarely) there will be a vending machine, but no one gets asked to insert two quarters for a few sheets of toilet paper and some running water.
Adding insult to likely abrasion, they seem to only ever stock baroque contraptions made of equal parts asbestos and splinters. Yet your period is an equally important involuntary bodily function as defecation, and dealing with it in a civilized way is an equally important public health issue.
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For some people ...
The full extent of obstacles to menstrual hygiene access is something that researchers have only just started looking into. Turns out, it's a huge problem. Young people in the U.S. end up missing school because they don't have access to tampons and would prefer their desks not look like the scene of a massacre. In poorer countries, many girls drop out altogether or even resort to prostitution, trading sex for pads or the money to buy them.