it's when a woman bleeds out of her vagina. i know it sounds gross but what her body is doing is releasing unused eggs. that is why a woman does not have her menstrual when she is pregnant because there is a egg being used to make a baby. the menstrual is also known as there period and puberty. when a women hits puberty or is going though it they get there period. there breast will also start to grow and they will get curvier. they may also get pimples and acne as a side affect too. more side effects of there menstrual is that they will have craps in the lower part of there stomach. that is the main side effect of a woman having there menstrual.so if you hear a girl saying i have craps there most likely to have there menstrual. if the craps are really bad it may cause pain in the inner part of there thighs or there lower back. another side affect is having headaches and nausea but not all the time but a woman always has craps on her period that is why it is the main side affect.it also makes us very mean sometimes because we can be really emotional and agitated at that time.a girls period starts like when they are 9-12. between thoughs ages a girl could have there period and it doesn't end until the woman is 50-60. that is when the woman goes through menopause which makes there period stop and when a woman goes though menopause it also means that that woman can not have kids any more. so it really sucks to be a women in many ways but it benefits us sometimes.hope this helps. p.s- when a girl says they have a heavy flow it means they bleed a lot when a women says they have a light flow it means they bleed less. spoting is just drops of blood. so if you are a guy cut a girl some slack. they go through a lot already.doesn't mean we can get away with every thing though and it doesn't mean we are weak ethier.
copied from another answer here:Can_you_get_pregant_the_first_day_on_your_periodYes. You can get pregnant anytime. Always use protection if you do not want to get pregnant.
Nothing super salty (unfortunately, it's true) as this will make you bloat like no tomorrow! Also, exercise will help with cramps and a slightly hotter shower! P.S. if you agree the 'always' commercials are stupid please let me know! have a happy period, always, total bs!