Menstruation occur at the age of 9 to 16 years old
Yes. Menstruation will still occur with out ovulation
Yes!
Menstruation occurs at the start of the menstrual cycle and normally lasts around a week, so menstruation would occur days 1-7 of the menstrual cycle.
If the egg is fertilized that means pregnancy has taken place. Hence, no menstruation.
on average every 28 days
Yes, Menstruation can also occur while pregnant, unless if she has menstruation disabilities.
of course not, menstruation occurs on the 14th day not the ovulation, and I say that the start of the menstrual cycle is actually menstruation.
The decrease in the levels of estrogen and progesterone.
Menstruation
Normally every 30 days.
The symptoms typically start a day or two before menstruation, usually ending when menstruation actually begins.