Symptoms The symptoms usually appear after a menstrual period.

The measurement of CRL is useful in determining the gestational age (menstrual age starting from the first day of the last menstrual period) and thus the expected date of delivery (EDD).

The first day of red bleeding is considered day one of the menstrual cycle.

Table 5.4 Ratio of abortions and menstrual regulation in urban and rural areas from 1998 to 2002 ( )

History Early methods It is not known if historical cultures were aware of what part of the menstrual cycle is most fertile.

An average gestational period (duration of pregnancy from the first day of the last menstrual period up to delivery) is 280 days.

Calendar based methods are various methods of estimating a woman's likelihood of fertility, based on a record of the length of previous menstrual cycles.

Second, if you're pre menopausal, try to schedule your mammogram in the first two weeks of your menstrual cycle, when breast density is relatively lower.

From using plants and roots to cure infections, to learning about the connection between lunar and menstrual cycles, these pages inspire women to take our bodies back into our own hands.