There's an awful lot of PMS on this forum recently, for example, lol.
PMS coping = 'This too shall pass'. People bitch, its their nature. Usually whatever they are bitching about is just a symptom of something else.
I'm not sure MissS about PMS being all psychological. Or that if it is, that doesn't make it real. Hormones are powerful things & can affect one's ability to think clearly. Ask any horny teenager.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh