Illness, rapid weight change, or stress can also make things more unpredictable. That's because the part of the brain that regulates periods is influenced by events like these.
Going on a trip or having a major change in schedule can also make your period come at a different time than expected. All of this is perfectly normal. It's also normal for the number of days a girl has her period to vary.
Sometimes a girl may bleed for 2 days, sometimes it may last a week. That's because the level of hormones the body makes can be different from one cycle to the next, and this affects the amount and length of bleeding. If your cycle is not regular, you'll want to pay attention to the clues your body may give you that your period is coming soon.
These may include:. Keep some pads or tampons in your backpack or purse, just so you'll have them handy in case your period comes when you're not expecting it. You may even want to carry an extra pair of underwear. Most of the time, irregular periods are part of the normal changes that can happen when you're a teen.
As you get older, your cycle will probably settle into a recognizable pattern. Sometimes, irregular periods can be caused by some medicines, exercising too much , having a very low or high body weight, or not eating enough calories. Hormone imbalances can also cause irregular periods. For example, thyroid hormone levels that are too low or too high can cause problems with periods.
Some girls have extra androgen, a hormone that can cause hair growth on the face, chin, chest, and abdomen. Extra androgen can also makes girls gain weight and have irregular periods. Talk to your doctor if you have had sex and have missed a period because you could be pregnant. Also let the doctor know if:. However, and became leap years by error. This left Sweden out of synchronization with both the Julian and the Gregorian calendars, so the country reverted back to the Julian calendar.
February 30, , came into existence in Sweden when the Julian calendar was restored and 2 leap days were added that year. Not everyone was pleased with the calendar reform. Some people believed it stole 11 days of their lives. The Soviet Revolutionary Calendar February 30 existed from — after the Soviet Union introduced a revolutionary calendar in If it is not a leap year, then February has 28 days. February is followed by March and the last day of February is 28 th.
Thus, if tomorrow is March 1 st , today is February Example 3: Tom's mother told him there are 3 weeks and 4 days left in the year to end. Can you help him understand how many days are left in the year? Tom's mother said that the year will end in 3 weeks and 4 days. We can easily count the number of weeks in a month by first counting the number of days in the month. Then, we divide the number of days by 7 since 1 week has 7 days. The Gregorian calendar has 12 months in which some months have 31 days, some 30 days and some have 28 days.
A few months have some extra days, but they are not counted as a week because these extra days are not enough to sum up to 7 days. To check whether a year is a leap year or not, divide the year by 4. However, there are century years like , which need to be checked by dividing them by instead of 4 to know whether they are leap years or not. Learn Practice Download. How Many Weeks in a Month It was the Babylonians, who lived in modern-day Iraq and decided that our weeks would be seven days long.
How Many Weeks are there in a Month? Calculation of Number of Weeks in a Month 3. Weeks in a Month Table 4.
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