What could be a reason for period being 7 days early?

Question

Was sterilised last August so can't be pregnant.

Answer 1

It might just be your cycle changing, so many things can effect your period. I shouldn't worry about it, but if you are concerned go to your doctor.

Answer 2

'down there' misread the calendar

Answer 3

Hormones hun are the most unpredictable thing, they can change suddenly which in turn changes your cycle, this is the normal cause for your periods changing, the only other thing might be because your stressed out about something, have worries you don't normally have, are upset recently, all these can have an effect, try to relax about it, we all experience slight changes at some time, its quite normal, of course if you are really worried and don't like how you feel then go to your GP just to put your mind at ease, good luck hun and hope this helps.x.