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Reasons for Having a Period Every Two Weeks

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Menstrual Cycle related image Andres Rodriguez/PhotoSpin

The menstrual cycle occurs in all females from the onset to puberty (average age 11 or 12 years) to the menopause in middle age (average age between 45-55). The lining of the uterus is shed via vaginal bleeding when a girl or woman has not conceived a pregnancy.

The menstrual period lasts between two days and seven days, usually occurring once every 28 days, although anything from once every 24 days to once every 35 days is considered normal.

If you are having a period more than once every 24 days, it is considered an irregular cycle.

Having a period once every two weeks, or twice a month is abnormal and you should see your doctor because you may become anemic if you are having very frequent periods. They are sometimes a sign of infection or other medical problem that would need treatment.

Reasons for a period every two weeks could be:

• Dramatic weight loss or gain -- This changes the hormones in the body and these are responsible for directing when the period will start.

• Excessive exercise -- This too disrupts hormones.

• Stress -- Exams, family argument, financial worries, divorce, even a holiday can cause a temporary change in your menstrual cycle.

• Illness and/or medications -- Some medications can affect your cycle. Talk to your doctor about altering or stopping your medication if you think this is happening.

• Uterine problems such as polyps, cysts, fibroids or tumors (either benign or cancerous).

• Sexually transmitted infections -- These can cause bleeding in between periods which can be mistaken for a period.

• Thyroid problems -- Thyroid disease could cause a thickening of the uterine lining, resulting in more bleeding than normal.

• Reactions to contraceptive methods -- Sometimes the pill, depo provera injections or the copper-only IUD can result in a change in your cycle.

~ The pill and IUD can make you bleed in between periods, known as "breakthrough bleeding" and this may be mistaken for a period.

~ The IUD can also make your periods heavier.

~ The depo-provera injection can make your cycle irregular, however, it often stops your period altogether instead of making it more frequent.

Add a Comment201 Comments

EmpowHER Guest

I was hoping some of you who have had this problem (period every two weeks) for more than 1-2 periods would post your outcomes. I have been getting my period roughly every two weeks and I can't get to a doctor yet. I just moved to a new city and don't have a job, thus insurance, yet. I'm 41 years old and I'm a little worried since I've had such normal periods all my life. Am I just premenopausal? What have all of your experiences been? Did things normalize or was there some medical issue that needed to be addressed?

March 26, 2017 - 9:13am
HERWriter Guide (reply to Anonymous)

Hello Anon

If I were to hazard a guess, I'd say it's peri-menopause - the first sign is generally a change in the menstrual cycle and periods tend to come more often than less often, during this time.



March 27, 2017 - 1:01pm
EmpowHER Guest

I got periods after 20 days as i was earlier taking primrose capsules for pain in brests now again i have taken the capsules primrose 1000 is this effecting the periods

February 10, 2017 - 6:14am
Guide (reply to Anonymous)

Hello Anonymous,

I could not find any credible information to support the link between primrose capsules and the menstrual cycle. Some claim this herbal supplement helps relieve PMS.

But, it does seem to have caused changes in your menstrual cycle. Consider discussing this with your gynecologist.


February 10, 2017 - 12:31pm
EmpowHER Guest

I got period in month 3 tyms its not that heavy flow but still .... What should I do plzz help

January 28, 2017 - 2:20am
Guide (reply to Anonymous)

Hello Anonymous,

Did you read this article? Do any of the mentioned reasons apply to you?

With such limited information, I cannot tell you why you got a period three times in one month. Consider speaking with your gynecologist.


January 30, 2017 - 10:06am
EmpowHER Guest

Help me.. i got periods 2 times in a my past month. And then now this month its above 25 days that periods did'nt occur..

January 27, 2017 - 2:52pm
Guide (reply to Anonymous)

Hello Anonymous,

How old are you?

If you are an adolescent who has just started to menstruate, that could be the reason. The menstrual cycle can be irregular in the early years.

If you are in your 50s, this could be a sign of early perimenopause. As hormone levels fluctuate, the menstrual cycle becomes irregular.


January 30, 2017 - 10:11am
EmpowHER Guest

Hello' I have also a same problem since December 12' 2016 ' I am 30 years old and mother of 2 kids and happily married ' this is first time in my life my periods did start 12th of December 2016 and it was normal 6 or 7 days then I was fine and again my periods started 2nd of januray 2017 till 6th of januray ' and then stoped ' Ang now again start 18th of januray with flow and clots but no abdominal pain ' but I am facing problem with my legs are stretching ' I am worried plz help ...and advice...'

January 22, 2017 - 3:59pm
Guide (reply to Anonymous)

Hello Anonymous,

You need to be examined by your physician. Consider scheduling an appointment with your gynecologist, who knows you and your medical history.


January 30, 2017 - 10:08am
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We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.

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