Reasons for Having a Period Every Two Weeks

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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 Comment90 Comments

EmpowHER Guest

I have my menstruation regular and I have sex with my husband but didnt know I still have my period. After 2 weeks, I have my menstruation again. 2 days after that, it stops and then after 4 days, i have again then stop again.. Stop then have for 2 weeks. Its kind a weird. Sometimes, when I pee, blood burst and it is brownish. I took pregnancy test but it is always result is negative. What is happening to me now?

September 1, 2015 - 10:23am

I had period August 4 and again August 18 and I dnt know why

August 26, 2015 - 11:42am
EmpowHER Guest

Hi I'm 16years old and I had my implant in a year ago last July and 3weeks ago I had a period which lasted 3-4days then just 2weeks after I started another but it was dark brown in color then went grayish then pink then normal then back dark brown and I have now been on my period for almost 2weeks, what could it be?

August 23, 2015 - 9:20am
EmpowHER Guest

Hi I'm 17 years old. And I had sex with my boyfriend we used protection and everything but he came inside me and he might of thought the condom broke so we bought plan b and everything was good. Then a week after I took it I started my period again after I was just on it. So its like I'm having two periods in one month. What does this mean?

August 20, 2015 - 5:00am
EmpowHER Guest

Plz help first my period start normally & after my period I had sex, next day I got a period I.e 15th July and after 15 days again my period started...plz suggest what to do?

July 31, 2015 - 9:18pm
EmpowHER Guest
Anonymous (reply to Anonymous)

With plan b your lining sheds, so yes it is normal to get a period shortly after taking it.

August 22, 2015 - 6:34am
EmpowHER Guest

Hi, my periods have never been normal. I have went as long as 7 months without starting that time I was 27 years old. My age now is 38. This month I had a period a week and half ago, last night I stated having a dark discharge and this morning looks like I've started my period again. I've had mood swings for the past 3 weeks

July 29, 2015 - 5:22am
EmpowHER Guest

I got my period last July 5 and ends at July 12. And last July 24 I got my period again until this day. What the problem on me? This not normal. :(

July 28, 2015 - 6:16pm

Hi I just turned 41 this month last month I didn't have a cycle but I came on my cycle on the 3 of this month and went off on the 8th an now I have came on my cycle again it the 25th I am worried because I do have hyperthyroidism so I called and asked the nurse by me having thyroid problem is this why um missing my cycle she told me no so can you please tell me what is causing this

July 26, 2015 - 7:40am
EmpowHER Guest

Hi I am 23 years old and married
Last month and last to last month I had taken contraceptive pills because of which this month I got my periods twice ie in 10 days gap .
Kindly sujjest I am worried

July 24, 2015 - 8:10pm
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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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