I think many people may don't know what is the estrous cycle of human ,let me explain this.
Human females should not have such a lot of estrous cycles as nowadays ,in most time of history,they have 10 children so it's should be keeping in pregnancy and breastfeeding and far fewer times of estrous cycles.(breastfeeding about 4 years per child in traditional society.)
Thanks of second wave feminism ,everything changed ,and they didn't tell about the cost of PMS and painful period if women go to work but not have many children. Lack of risk disclosure ,it's so common but you can't find it in the compulsory education textbook.
What I want to focus on this thread is not those body symptoms,is they ruining the relationship with others every ~14 days. I know not every woman doing that. But I found a lot of this kind of behaves:they change the attitude to a same person every 2 weeks, and this attitude changing not just target their romantic partners,usually targeted their children as well. This is ruining their own interpersonal relationship ,which is the thing they most value. And I think they seem try to cover up it's the problem of estrous cycle,they know it.
How to spot on a PMS drama(I call it "drama" because TV dramas often change plots every 2 weeks):
They usually very value lookism for themselves and other people ,I guess is since their emotional instability ,they felt problem to build successful interpersonal relationship but still want mating.There they use the looking to attract mating only.
Record their attitude changes on a notebook,notice is she treat people totally differently by 13-15 days. I call it "heat period at day 14,attacking at day 28" and use this slogan for educate people spot them.
They won't admit is their own problem but attack others.
By the theory I linked ,they should treat "new guys they met recently"better,I found another reason is they know they ruined the relationship of "old guys" relationship already ,so they want to find some "new guys".
If you spot on a PMS drama, run! They have no rights to treating people like that way, and they have problems for running any long term relationship(not just romance relationship). Don't let these people hurt yourself!
I think this world is hell ,if people having 10 children ,they face Malthus disaster,it's people having 1-2 children, they face PMS and painful period. This is the mechanism of how we bring people to this world.