you see a doctor
If you have a smelly watery period it may contained having to go to the dr.
Menstruation usually lasts 3 to 5 days, but anywhere from 2 to 8 days is considered normal. Having a shorter (or longer) period is nothing to worry about.
you have something wrong with the way you have you period
This can be a indication of pregnancy. If your already pregnant, then mention the bleeding to your doctor.
stress?
It might me just a difference periods can do alot of things but it may be because your underweight or not eating probably.
There is no set number of days a period, sometimes they are shorter and sometimes they are longer
Some may, but being a former Vietnam POW does not automatically mean that one has a shorter, or longer, than normal life expectancy.
late-later (in days) than expected. Short-shorter (in days) than normal, Light-light flow.
Normal !
It is it might mean that you are pregnant!
Bright red period blood typically occurs on the heaviest days of your period. It is totally normal and does not mean that there is anything wrong.