Especially in your first year of having periods, they can be very irregular. If you are sexually active, get a pregnancy test as you might be pregnant.
And always if you're unsure, please see your nurse or doctor
It depends on what you mean by this - day 31 of your cycle?
Then this depends on your menstrual cycle length, anything up to a weeks variation in your cycle is normal and there are many reasons why your periods may be late such as stress or ill health. If you're 31 days late for your period then you've simply missed your period, lots of reasons for that, as long as it's a one-off then there's little reason to be concerned (unless you could be pregnant).
Depends on when you last had intercourse. Semen can linger and be viable a few days after intercourse, and rhythm methods are notoriously unreliable. But pregnancy w/o sex doesn't happen among humans.
Yes they can. Some even before that age.
Don´t worry. Women have irregular periods all the time. Even women with regular periods get irregular periods from time to time.
Yes, that can be normal. Periods average 3-5 days in duration and cycles average 28 days. But, if your periods are so heavy that they become a nuisance, such as having to change your tampon/pad every two hours or even less, you might want to mention this to your doctor if this is the case.
Nothing. Just relax, it will happen. Periods tend to be erratic when you are young. You could even skip a month entirely now and then, but eventually things will straighten out.
Young women from the time they go into puberty (10 - 12 they can start their periods) up to 16 they can miss several months of their periods. For young women older to adult women then they may well miss a period and start the next month. If you are over 16 and you have missed several periods it's time to see your doctor to be sure all is well. The birth control pill/patch can also cause you to miss a few periods. This is something your doctor should have warned you about. Perimenopause (can happen from 35 years or up) where your body is getting ready to go into menopause (can last a few years) may cause you to miss periods and some women may not have them for 2 - 3 months or even 6 months. Again it's important to see your doctor. When menopause occurs then the periods cease. Stress can also delay periods or make them erratic.
Around 8 - 80 and then you stop
Yes Vampires have periods. Even though they are dead creatures they do have periods. It may come as a shock but all vampired have periods even males.
it means nothing. Periods dont usually have an exact set time. They can vary a few days or even a week
Yes, it is far more infrequent an occurence, than in a 27 or 17 year old, for that matter. But it does happen, on occasion. It is even less likely to happen, however, if periods have stopped for several months to a year or more (menopause).
yes it is usually more likely to happen if you are hitting puberty though irregular periods are normal they should even out. But don't listen to me because i have no friends tbh :/
Pregnancy can accur anytime a women ovulates. A women can ovulate anytime of the month, even if they are on their periods!