What Causes Early Periods: Early Menstrual, Menstruation Cycle Reasons

Reasons for an Early Menstrual Period

All fertile females experience the menstrual cycle of physiological change. The menstrual cycle is under the endocrine system’s control and is essential for reproduction. There are three phases of a normal menstrual cycle:

  1. Follicular or menstruation phase
  2. Ovulation or Proliferative phase
  3. Luteal or Secretory phase

The average menstrual cycle is usually twenty-eight days, but it may vary from woman to woman depending on the length of time that occurs in each phase. Females or girls experience their first menstrual cycle during the later stage of puberty or at the age of twelve or anywhere between eight and sixteen.

Several factors can affect early menstrual cycle or the delayed menstruation. This may include diet, heredity and one’s overall health. Reasons for an early menstrual period, irregular, missed or too frequent periods are usually benign. The irregularity in menstrual cycle is commonly caused by hormonal imbalance which fortunately, is treatable.

Signs of Fertility

Whether there is a delayed or early menstrual period, menstruation or menstrual bleeding is a sign that a woman is not pregnant and will be on her most fertile period five days before or one or two days after the ovulation phase.

During menstruation, one may experience cramping in the abdomen and thighs, back pain, and irritability.

What are the Causes of Early Periods

Early menstrual period reasons happen when hormonal signals are thrown out of sync. Your body produces hormones such as estrogen and progesterone. These hormones are found in the pituitary gland, the hypothalamus and the ovaries. They send signals to one another to trigger menstruation and ovulation. When the hormonal signals are deregulated, it can cause an early (or irregular) menstrual cycle.

Here are some reasons that cause the change in hormonal levels:

  • Stress: Fatigue, too much worrying, and anxiousness can cause the hormonal imbalance.
  • Diet: Extreme weight loss or weight gain, or basically a poor diet greatly affects the hormones.
  • Exercise: Intense exercise can cause havoc on the body and thereby could be a reason for an early period.

Menstrual Complications

Early menstrual period by itself does not generally indicate any major complication. Most women would have regular menstrual cycle and periods later on. There are instances when some underlying complications are the reason for what causes early periods. If in the course of a menstrual period, you observe something different, which is consistent like excess flow or scanty flow of blood, severe cramping and headache, nausea or fainting, then you should seek medical attention right away.


  1. bbgurl said:

    My period has always been regular but I noticed that it’s been coming early. May 3rd, I got a regular period. I had sex on May 23rd. June 2nd, I got another period which was normal, week long, heavy at first, lighter towards the end and horrible cramps. July 1st, I got another normal period, and then on July 31st I got another period. Can someone explain to me what is going on here? After my July 1st period on July 20th I took two home pregnancy tests and they both came out negative. Why are my periods like this?

    August 27, 2010
  2. J said:

    Every month for the last several months my period has been coming on a week earlier with each month. One month it was 10 days early and since then it gone from 6 days early, to 5, to 7 days early. This has been going on for 4 months now. My husband and I have decided to not try and prevent pregnancy, but I have become baffled by the fact each month my period is earlier and earlier. My period has always been either on time, a week late, or a week early when not on birth control, but not every month. That has always been something that happens from time to time. It has become a bit frustrating because we decided we want to have a baby and each month my period comes earlier. We only have one child, that is 12 now and there have been no more pregnancies since then when I was 25 years old. Could there be something wrong with me or would my age be a factor, now 37? I would love to get some sort of feedback on what possibly could be going on. Thanks so much, J.

    January 1, 2011
    • PUP said:

      Considering your age, you may be having hormonal imbalance in your body. It may be one of the reasons for your early menstruation problem. Your diet and overall health may also play an important factor in getting early menses. Stress has been blamed to cause imbalance in hormones. In order to get pregnant, you should have regular intercourse in the fertile period. It is counted as 10th to 15th day after the last day of bleeding.

      January 7, 2011
  3. L V said:

    I have a 26 day cycle, but I noticed that my period is 11 days early. That’s 15 days after the start of my last period. Should I be concerned? I am 40 years old. Does this mean I am entering menopause already, or can it be something else?

    January 14, 2011
  4. ATKG said:

    My 9 year old daughter just started menses yesterday. Is this normal or is it too early and will affect her?

    November 4, 2011
    • TDR said:

      Some girls start menstruating even at the age of 8. Although I believe your daughter should be fine, please attend to her for the first few cycles and provide all the emotional support she needs. If you notice anything unusual, you may want to get expert medical advice.

      February 5, 2012
  5. maki said:

    My husband and I have been trying to conceive. The first day of my period was 3rd October. I started feeling changes in my body around the 19th with swollen breast, tenderness, swollen tummy, frequent urination and nausea. All this continued for around a week. On the 24th, I noticed light red spotting and for the next 2 days, dark brown mucous type spotting. Last night I started having strong period pain. Several hours later I received what I believe to be an early period (early by about 6 days). My period was due on the 2nd of November.

    January 16, 2012
  6. Zakir said:

    My wife is a colon cancer survivor. She is absolutely fine at present, but has been having early periods for the last two months. Is this something I should be worried about?

    January 30, 2012
  7. aria said:

    I am 37 years old and I had a Laparoscopic surgery to get my myoma removed in September. 20 days after that, I traveled for a month. My 1st and 2nd period after the surgery was on time, but the 3rd period came 10 days early. The period after that was again on time but I bled for 8 days. I normally bleed for 6 days. Again, this month I got my period 10 days early. I have not been pregnant but we were planning on starting a family soon. What could be the cause of these early periods?

    January 31, 2012
  8. La Fleur said:

    I had started out with normal periods for the earlier set of years, but for the past couple of years my periods are very irregular. If I have an intercourse my period tends to come a week early. Sometimes, it even come within 14 days and lasts for about 9-10 days. I started having my period since I was 12 years old and it was ok until for the past 4-5 years.

    February 4, 2012
  9. NIC said:

    I had my son in June of last year and my periods have been regular since it started two months after the delivery and always on 24th to 26th and this month it started on 16th. I have an IUD inserted. Should I be worried that it may be pregnancy? There are no symptoms just early period. Please advise.

    March 21, 2012
  10. TK said:

    I got my period 10 days earlier than the due date. I usually have a regular period cycle every 28 days. I have cramps and the blood is kind of dark color. I am very worried that it could be something with the hygiene or caused by sexual interaction. Please help me.

    March 25, 2012
  11. RC said:

    My daughter had her menstruation at the age of 10 years. Her first menstruation lasted 7 days, and now on her 2nd month, her period is still on for 13 days. Is this normal?

    March 25, 2012
  12. DR said:

    I need help as I am confused because a few weeks ago, we had a condom break and I was going to wait till next week to test because that is when my period is supposed to start. My period is usually on spot, sometimes a day late and 5 days at the most. But when I woke up, I was bleeding. What does that mean?

    June 12, 2012
  13. Emi said:

    I am 16 years old and never had sex. My period normally starts every 40 days for last three years now. I got my period today and it is 15 days early and my last period was 13 days early. I exercise regularly and also eat healthy.
    I also have the worst cramps and back pain. It makes me sick to my stomach. I am not on birth control. Advil and heat don’t really do much to help the pain anymore. I don’t understand why is this happening? Please help!

    June 21, 2012
    • PUP said:

      It is a common problem among many girls during their early puberty years, you are not alone. During puberty, your body takes some time to adjust to the changing hormones. For this reason you may be experiencing irregularity in your periods. Same is the reason for backache and stomach cramps. If you are getting severe cramps, you should consult your doctor. For moderate cramps you can also try home remedies such as applying heating pad on your abdomen or relaxing in a hot bath. Sipping herbal teas is also beneficial. Eat small meals and avoid eating large meals. Avoid eating too much of salt during this period. Reduce stress and anxiety as they may aggravate the cramps and backache.

      July 3, 2012
  14. abd said:

    I started my periods when I was 12. Now my age is 24. Quite a few time my periods have come early than the expected date. Is it normal?

    June 26, 2012
    • PUP said:

      It is normal for periods to occur early during young age. In most cases the cause for menstrual irregularity is hormonal imbalance.

      June 27, 2012
  15. GY said:

    I was away from home for ten days and I had unprotected sex with a guy when I was there. A couple days later, I had a three day long period that arrived two weeks early. I am 17 years old, and I am not sure if this is due to a possible pregnancy, or the stress from being far away from home is the culprit.

    July 5, 2012
    • PUP said:

      I would like to know few details such as, whether your periods are regular all the time. Was this your first sexual experience? Considering your age there is a possibility of hormonal fluctuations giving rise to irregular periods. It could also be a reason due to hymen tear if this was your first sexual experience. In any case you should consult your doctor to rule out pregnancy.

      July 7, 2012
  16. GB said:

    My periods are pretty regular averaging 27 days although I have had a occurences where it’s been 26 days or 29 days. My period came a week early this time and am concerned because we’re trying for a baby and I’m not sure as to why my period has arrived early. We have been trying to conceive for approximately 2 years and unfortunately in March of this year I had a miscarriage which was noticed at our first scan. Since then we are having sex at the right time in order to conceive and I’ve tried various ovulation sticks to prove that we are ovulating. I’ve had tests and yet nothing and now my period is a week early. I’m really quite concerned.

    December 16, 2012
  17. Anonymous said:

    I am 29 years old. My cycle is always regular on 28th day no matter whatever. This month I got my periods 3 days early. Usually I have heavy periods on second and third day but this month the flow was light. From last month I am trying to conceive. Some people told me that light bleeding may occur during early pregnancy so I took home pregnancy test but it came negative. I am really worried. Can I be pregnant?

    January 22, 2015
    • PUP said:

      According to your description, the blood flow is more likely to be that of menstruation. Sometimes, there may be change in flow as well as days. The changes depend on hormonal shifts. If you are having any doubt, you can consult your doctor.

      January 24, 2015
  18. Vals said:

    I am 24 years old and I used get my periods regularly. Suddenly one day I got a big wound on my hip and then I got the period with duration of 24 days. Then within 17 days I got the next period again with a wound on hip. I consulted the doctor and he gave medicines. This time I got periods within 19 days again with a wound on hip. I am not getting what might be the reason. Kindly suggest if you know anything about this.

    September 18, 2016
  19. Blenz said:

    My period is regular every month. But this time it is early by almost 13 days. It has never occurred in this way anytime that is menstruation before the expected date. I also took postinor 2 on 5th of this month.

    July 13, 2018
    • PUP said:

      Often changes of hormonal level in body are responsible for early or delay of menses. Besides this stress and strenuous exercise can be a factor. Postinor 2 is an emergency contraceptive pill. This pill contains certain hormones. We do not know for sure what may be the reason for your early menses. However, if the episodes recur during each cycle, you must consult your doctor.

      July 26, 2018
  20. DN said:

    My child got her period at the age of six is it normal. I am worried.

    September 3, 2018
    • PUP said:

      Usually menses in most girls begins between the ages of 10 to 15 years. But nowadays early onset of puberty is observed in many girls. Growth of pubic hair and breast enlargement is observed by the age of 6 or 7. Some girls of this age also start to menstruate. Doctors do not know the exact reason but they suspect several factors such as genetics, exposure to environmental toxins, family stress, etc as the cause. You must consult a gynecologist if she has started her periods at this tender age of 6.

      September 4, 2018

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