月経 げっけい ぜん症候 しょうこう ぐんでしょう
gekkeizenshōkōgundeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 月経前症候群

1. Probably PMS.; Possibly premenstrual syndrome.

Polite
Presumptive
Conjecture
Medicine