if you are on the pill, yes. if you want it to start, stop taking pills before you're done the pack. I've never tried it, but i would suppose that you could also delay it thus, by continuing to take pills on your "week off".
It shouldn't, but whatever ailment you are taking it for might cause delay. If you need penicillin, your body has an infection somewhere and your cycle could come late or early.
no
I hear that stress can play a part; making it come early or late. Also, health problems are the leading reason, I would think.
why did my period come 4 days early?
early period
Coraline
he came from the early period
Harry Potter And The Half Blood Prince
Stress can cause your period to be early, late, or even skip a month.
If you're pregnant, your period does not come on at all.
No a pineapple will not make your period come sooner
Usually, that close to a period sex will cause a delay in the period for a day or two.