Yes, in fact if the girl doesn't ovulate then she doesn't menstruate! After ovulation if the egg isn't fertilized the body sheds the uterine lining ready for the next cycle, this is menstruation.
I am a 17years old and my resting heart rate goes as down as 43bpm and normally it is between 45 and 60 is that okay??
Technical you can. If you have unsafe sex just before you have your first period you can get pregnant. Before a period you are fertile, so its better to be safe than sorry..
Yes, ovulation comes before a period, so a woman will ovulate before her very first period, before her first period post-pregnancy, etc.
Multicellular organisms first appeared during the Vendian period.
Trilobites
When she starts to ovulate which you do before you get your first period.
The first organism appeared during the Proterozoic period. It is estimated that the first organism appeared between 2.5 and 3.8 billion years ago.
Yes but for some people are different
Yes, but only if its about a week before you first get it.
No. You can get pregnant in the week(s) before your first period.
yes
It must die.
Starting the pill before your period may delay your period, but you may also have breakthrough bleeding during the first three cycles. If starting the pill before your period, use a back up Birth Control method for the first seven days.