Ellipses are used to show an intentional omission of words or phrases. See links.
Victorians
I believe it was the Classical era.
If you're on birth control and have missed any pills this can result in a early period. Alternatively pregnancy, irregular periods or hormone imbalance can also cause a early period.
you are on your period
How to Reduce or Stop Menstrual Periods
Non-Hormonal Treatment for Heavy Periods
Talking About the First Period with Your Daughter
Treatment Options for Long Periods