Many ancient people also called menstruation "nausea" or "nausea", avoiding some indecent and embarrassing words.
So in contemporary society, we usually say "good things" or "festivals". But no matter how strange the name is, it has become tacky after being widely circulated by the public.
There is only one way for couples to run in. Menstruation is coming, although it is a joke, it is not elegant enough. There are often other substitutes between husband and wife.
In ancient palaces, rings usually have another function, which is to tell the emperor that something good has happened to him and he can't spend the night with him.
Couples often have stomachaches to let each other know.
The most effective way for friends to get together to avoid alcohol and tobacco is to say that they are in poor condition, or that they are periodically unhappy these days. Most friends, both men and women, can understand.
Sometimes there are some clever hints, such as wanting to eat red dates, indicating that the body is ischemic. Of course, people who want to see the tips will naturally understand.
Dysmenorrhea is not a word that is not on the table now. As long as you say dysmenorrhea, colleagues and parents will show concern.
So there are too many substitutes. Except those who know nothing about physiological knowledge, various explicit or implicit expressions may solve their own embarrassment!