Hmm, well I guess periods just cause your vagina to bleed.
But, I'm not sure if there is more period causes because I'm really young right now and let's just say I'm under 11 years old.
No.
Being on the pill can cause spotting between periods, called breakthrough bleeding.
Does a cold front cause precipitation to fall for longer periods of time but less intensely
Ageing....
Yes.
yes
Periods will become frequent with certain birth control medicines, but they also can cause infertiliy.
No, but if constipation is caused by illness, the illness can cause a period to be late.
Pregnancy
yes
can stress dely menstrual periods
Yes, it can be. If you are under stress this can cause missed periods. If you have been sick, on a diet, all of these things can cause missed periods. If you are young and just starting your periods it is common to skip months or to have irregular period. It takes a year or two before a cycle becomes regular.