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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 Comment216 Comments

EmpowHER Guest

I'm 24 years old.On April I had my periods on the 03rd, and have been having unprotected sex, this month May, my periods came late around the 13th, n i did do pregnancy test and it was negative. I start having extremely periods again and it's the second time in a month it started on the 26th. What could be the problem

May 28, 2017 - 12:42pm
EmpowHER Guest

Hi i am ran 21 and i am worried because i have a normal period before but now this april my period became twice a month or every two weeks but the one week of that two period is just a spot please help me i am worried.

May 21, 2017 - 6:16am
HERWriter Guide (reply to Anonymous)

Hello Anon

A spot is not a period. If you are concerned about pregnancy, take a test.



May 22, 2017 - 8:40am
EmpowHER Guest

Hi, I m 23 years old with a 0 % chance of pregnancy. From june 2016 ,I m facing irregular periods. after june i got my periods in the first week of october 2016, in between periods i had a fever for which i took antibiotics and in novembr i travelled more than a routine,after that I had my periods in Feb 2017 .From feb I m having heavy periods of about 14 to 15 days . just after 10 to 12 days periods start again which lasts for that long again.. In between periods , i m having dark brown spotting.
I went to the Doctor in April .And she said its because of increased weight. but i haven't noticed any big change in weight .
My height is 5.1 and weight about 70 kg.
Should I go to another doctor or should just rely on loosing weight.??

May 9, 2017 - 6:19am
EmpowHER Guest
Anonymous (reply to Anonymous)

Yes, stay on it. For years i went undiagnosed. Oh, it's in your head, it's normal, etc, etc. Till I was finally diagnosed a decade later and unable to have children.

May 16, 2017 - 2:42am
HERWriter Guide (reply to Anonymous)

Hello Anon

You may have polycystic ovaries - symptoms are irregularity and weight gain among others. 

If you don't have this hormonal disorder, you may have something else going on.  Being overweight can affect the menstrual cycle but it can also be caused by it too. Ask your doctor to do some bloodwork to see where your hormones stand.



May 9, 2017 - 1:17pm
EmpowHER Guest

I've had my period every 2 weeks for as long as I can remember. It started at 11, I am now almost 16. Is there any way I can stop it and get it back to normal?

May 2, 2017 - 4:45pm
EmpowHER Guest

I couldn't find a similar problem like mine
While my period comes once every 17 days and lasts for nearly other 17 days and it's happening this way since I was 21 and now I'm 25 and still this way
I went to a doctor two years ago who told me it's normal to have a long period with short time in between two periods
But I don't think it's normal since my period has never regulated
When I first had my period I was 12 and since then it didn't happen to be regulated
In the first two years I have it once every 24 - 27- 30 days and lasts for 6-7
After that I started to have it once every every 17 - 20 days and lasts for 10 days then by the age of 21 it happened to be messed up when I have it every 17 - 15 days and lasts for 15-17 days
Can you help me? Is it really normal as the doctor said or I should see another one?

April 30, 2017 - 10:29pm
HERWriter Guide (reply to Anonymous)

Hello Anon

This is absolutely not normal - seek a second opinion. 



May 3, 2017 - 4:53am
EmpowHER Guest

This is my third period I over the last month in a half. I have blood clots and it seems to keep coming every 11 days. Normally I have a period 1 every three weeks or 20 days so I'm use to it being some what abnormal. I'm 35 years not on birth control I know I don't have a STD, am I premenopausal? At my age? Thank you in advance for any advice.

April 17, 2017 - 9:55pm
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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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