Reasons why menstruation comes a week early every month

Nowadays, there are many reasons that may cause irregular menstruation, but most people don’t care about it and think it’s no big deal. Adolescent girls will feel that their menstruation is irregular and always comes a week early every month, which is very strange. So what exactly is the reason that causes their menstruation to come a week early every month?

main reason:

The normal menstrual cycle of a woman is usually 28 to 30 days. A period 3 to 7 days earlier or later is considered normal. A woman's ovulation date is generally about 14 days before the next menstrual period. After the egg is released from the ovary, it can survive in the fallopian tube for 1-2 days, waiting for fertilization; the male's sperm can maintain fertilization potential in the female's reproductive tract for 2-3 days, so it is easy to get pregnant through sexual intercourse a few days before and after the egg is released. To be on the safe side, we call the 5 days before and 4 days after ovulation, together with the ovulation day, a total of 10 days, the ovulation period.

Generally, it is normal for menstruation to come one week earlier or later. But if you have lower abdominal pain or backache during normal times, it depends on your leucorrhea. Normal leucorrhea is white, paste-like or egg white-like, highly viscous, without fishy odor, and small in quantity. If there is a disease in the reproductive tract, the amount, properties, and odor of leucorrhea will change. If you have similar conditions, go to the hospital for a gynecological examination in time.

There are many reasons for abnormal menstruation, such as endocrine disorders, uterine diseases, gynecological inflammation, ovarian diseases, mood swings, drug effects, environmental changes, overwork and excessive mental stress, etc. It is recommended to go to the hospital for examination in time to identify the cause so as to follow the doctor's advice and receive targeted treatment as soon as possible.

The method of calculating ovulation according to the menstrual cycle is also called the calendar method. Both menstruation and ovulation are affected by endocrine hormones from the pituitary gland and ovaries and show cyclical changes. The length of their cycles is the same, both occurring once a month, and ovulation occurs between two menstrual periods. Women's menstrual cycles vary in length, but the interval between ovulation and the start of the next menstruation is relatively fixed, usually around 14 days. Based on this relationship between ovulation and menstruation, the ovulation period can be calculated according to the menstrual cycle. The calculation method is to count from the first day of the next menstrual period, and count down 14 days or subtract 14 days to get the ovulation day. The ovulation day and the 5 days before and 4 days after the ovulation day are called the ovulation period. This is the theoretical basis of the rhythm method of contraception. For example, a woman's menstrual cycle is 28 days, and the first day of this menstruation is December 2nd. Then the next menstruation will be on December 30th (December 2nd plus 28 days). Subtract 14 days from December 30th, and December 16th is the ovulation day. The ovulation day and the 5 days before and 4 days after it, that is, December 11-20, is the ovulation period. Except for the menstrual period and ovulation period, the rest of the time is the safe period.

The above is a detailed explanation of the reasons why menstruation comes one week earlier every month. In fact, whether it is delayed by one week or one week earlier, it is normal within this range. However, if it exceeds this range, you should go to the hospital for a detailed examination.