Bleeding after a missed period could mean a miscarriage
It just means that you missed a period
This may be brought on buy ovulation and an increase in such things such as progesterone promoting the concentration of melanin in areas of the back, and the ovulation could possibly contribute to lower back pain.
It means that if your period is supposed to start on Saturday, 6 days before your missed period would be the Tuesday before.
Amenorrhea is the medical term that usually refers to three or more missed periods. It's sometimes used to mean just one missed period.
if you mean that you missed one period, and got the rest of them. chances are, you only missed your period due to stress.
This could mean that you have a cold.
The missed period could mean you were pregnant and now for some reason are loosing it. Go to the doctor.
Do you mean Mesozoic or perhaps Cenozoic?
Possibly menopause, or preparation for menopause. Or pregnancy?