I'm assuming you're talking about menstrual periods, despite the "Periodic Table" classification. You probably have a hormone disorder, which can be caused by many reasons. One prominent reason is in those with food disorders. Those with food disorders are those that are either bullemic or anorexic because the lack of nutrients in the blood can cause those with eating disorders to miss their periods on account of no nutrients to replenish the blood, which in turn does not replenish the brain, and the brain sends mixed messages to the other systems in the body because it is not getting the nutrients it needs. Also, any hormone disorders, where a woman has either too much or too little of estrogren, progesterone, or testosterone can cause a woman to miss her period.
The starting AND ending of your periods. :)
rows. the vertical columns are called periods
7 periods
No - only mammals have periods.
periods, they are periods
they dont have periods.
Periods have same shells. There are 7 periods in periodic table.
The main dinosaur periods were the Triassic, Jurassic and Cretaceous periods. they were in the mesozoic era. there were other periods before dinosaurs like the carboniferous.
your periods can be influenced by the people around you........ but this is hormonal .......periods are not contagious like a cold or the flu
rabbits don't have periods.
Birds do not have periods. They lay eggs.
No. Dragons are not mammals. Therefore, they do not have periods.