月経周期は約４週間です。の英語

My menstrual cycle is about every four weeks.

My period is five weeks late.

the average menstrual cycle is 28 days

the second half of the menstrual cycle after ovulation

the menstrual cycle

a menstrual cycle of a woman

the phase of the menstrual cycle during which the lining of the uterus is shed (the first day of menstrual flow is considered day 1 of the menstrual cycle)

days of the menstrual period

the state of having no menstruation

（not） to see the flowers

menstrual period(s)

a menstrual period

irregular menstruation

absence or suppression of normal menstrual flow

My last period was two months ago.

menstrual period

delay of menarche beyond age 18

that time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation)

the first menstruation

A consequence of weight loss is amenorrhea.

the first menstrual period

My period is a week late.

cessation of menstruation in a woman who had previously menstruated

bleeding from the uterus that is not due to menstruation

the act of a womb of bleeding abnormally

the first occurrence of menstruation in a woman

It's about one month.

I got my period today.

Aunt Flo came to town today.

of a woman, a condition of being considered unclean during lying-in or menses