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 Comment85 Comments

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

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
EmpowHER Guest

I'm 54 and have been fortunate to have had very light periods most of my adult life. My period started when I was 12 and then disappeared until I was 16...Lucky me...right? That is until I turned 45 and had a lot of stresses in my life....First my L4/L5 disks started rupturing due to spinal stenosis, degenerative disk arthritis. I made the mistake of having a lamenectomy fusion..,big mistake...although I had a wonderful neurosurgeon, this particular surgery made me significantly worse regarding my pain...similar to the domino all my disks are rupturing...I was a competitive swimmer throughout college and I am fortunate to have a pool at home. I swim laps to suppress the pain....When I was 48 I was diagnosed with hypothyroidism and was prescribed synthetic thyroid Rx med...This resulted in high blood pressure, and high cholesterol....then to top it off, my husband passed away from cancer 3 1/2 years ago....I landed in the hospital with two TIA's in conjunction to Thyroid storm only to be told that my previous health care primary care physician misdiagnosed me and I am actually hyperthyroid and was diagnosed by an Endocrinologist as having Graves Disease...I am taking the correct ATD's now. I've been asthmatic and have had bronchitis triggered by various environmental allergies since I was 2....Simce my Graves diagnoses, I catch more infections..Since Graves is an autoimmune disease and I am a public school teacher, when I am exposed to colds and flu's, I catch them all and they linger for months exasperating bronchitis and chronic asthma attacks even after I take the flu shots every flu season....My periods are now super heavy, lots of cramping accompanied with severe migraines that I have never had before..Recently, I skipped two months not having a period, then by the third month I had two periods...Causing even more fatigue due to my iron deficiency anemia and the fact that my Graves also causes significant fatigue...Although I was diagnosed with fibroids and endometriosis in my 30's, I am not a candidate for a hysterectomy because I am currently being screened for possible Afib from the Graves' disease and cannot risk surgery when I have these other health factors...I cannot have an endometrial eblation because my uterus is retroverted....With all this, I am fortunate to have two children in their early to mid 20's....I refuse to take hormone replacement for fear it may potentially cause various cancers....What can I do to alleviate this pain from the heavy irregular periods I am having and because I have had iron deficiency anemia most of my life iron vitamins hurt my stomach. Intake prescription Prilosac due to my hiatal hernia and mild stomach ulcer...My iron deficiency is so low that I feel very faint and dizzy during my heavy periods. Does the thyroid hormones from the Graves contribute to all my menopause symptoms? Thank You.....Allie

June 19, 2015 - 12:30am
EmpowHER Guest

I’m 24, married and I’ve gained weight in the last few months. We both are trying to conceive. From the past 5 months I’m having regular periods which means 28 to 30 days cycle but on the 14th or 16th day, I’m getting 2 to 3 days discharge just like periods with dark brown clots and cramps in the ovary areas. I’m really stressed out. Is this something serious? Am I going to conceive with this issue? Please help!!

June 4, 2015 - 7:36pm
EmpowHER Guest
Anonymous (reply to Anonymous)

Seems like you might be pregnant visit a doctor

June 26, 2015 - 9:10am
Maryann Gromisch RN Guide (reply to Anonymous)

Hello Anonymous,

Please schedule an appointment with your gynecologist. By doing so, your stress levels will be reduced once you have answers to your questions.


June 5, 2015 - 8:40am
EmpowHER Guest

I have gotten my period twice in one month and have had pregnancy syptoms My nipples hurt and I've feEl tired all the time and occasionally get sick in the morning I have multiple tests and all negative it's starting to concern me can anyone answer me to this?

May 4, 2015 - 2:57pm
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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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