On occational late period may start between 36 and 40- something days after the start of the last menstrual cycle.
This interval is not enough to be considered a missed menstrual flow, but rather, a late or delayed period.
A number of reasons can cause your period to be late.
BAMBOO [ Bambusa Bambos ]- act as an Emmenagogue which stimulates menstruation
. Regular consumption of the bamboo leaves to promote and regulate the menstrual flow.