What factors can delay mentrual flow?

just read on site you can use vinegar to stop menstrual flow, if not wot can be used

My period is like really heavy and stuff. and I hate it. esp the cramps. but anyway. I was wondering how can I get it lighter...

I travel from another country 3 months ago and my mens stop since then I had a spot only.is that a sign of pregnancy?

im 13 and I have blood clots and a heavy flow and it also soaks through when I sleep is that normal? Because im scared when i...

just a lil confuse between the two... which is right to ask? --what delays ovulation or what delays menstruation?

if u'v been depressed or stressed can it make you're periods late?

how can you slow down heavy blood flow on your period?

My period started after a few days of worrying but now its pretty light flow & dark. What does that mean?

I want expert advice not opinion

ok this is urgent...please answer fast... My girl periods will be starting on tomorow. She wants delay for two days or wanted...