Yes. Menstruation will still occur with out ovulation
Menstruation occur at the age of 9 to 16 years old
No.
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 is one of the phases of the menstrual cycle, whereas the menstrual cycle is the entire reproductive system. During the menstrual cycle an egg is released and to prepare for possible pregnancy the uterus lining plumps-up, if pregnancy doesn't occur the uterus lining sheds (menstruation) so it can start afresh again next cycle.
If you're asking this question then you shouldn't be having sex. Obviously if you're menstruating you cannot be pregnant, menstruation will only occur if you didn't fall pregnant.
Menstruation