because the ovaries stop realising eggs
Yes, you can stop getting your period.Obviously pregnancy would stop menstruation, and some health conditions could stop menstruation. If you wanted to stop menstruation you could use menstrual suppression or have a hysterectomy, obviously both of these are risky so only done as a last option.
Probably not, however there have been cases of pregnancy and a mild menstruation during first trimester of pregnancy.
No, there is no ovulation or menstruation during pregnancy.
The same thing that causes pregnancy after menstruation: sex.
Menstruation and medication
Menstruation is what happens when a woman doesn't get pregnant - after ovulation the uterine lining builds-up in preparation for possible pregnancy, if a woman doesn't get pregnant then menstruation occurs to shed the uterine lining so it can start fresh next cycle. During pregnancy the uterine lining is busy keeping the growing embryo/fetus safe, and women no longer ovulate.
You buy a pregnancy test.
Slim to none.
this could be pregnancy or stress.
If the egg is fertilized that means pregnancy has taken place. Hence, no menstruation.
Only females are affected by monthly menstruation.
You can't.