Examples of using "месячные" in a sentence and their english translations:
Are you having your period?
My period is regular.
My period hasn't come.
My period is five weeks late.
I had my first period when I was 13 years old.
My last period was two months ago.
A paycheque is like menstruation. It comes once a month but only lasts a week.
My period hasn't come.
She has her period.