Reasons for Having a Period Every Two Weeks

Rate This
Reasons for Having a Period Every Two Weeks 5 5 5
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 Comment82 Comments

EmpowHER Guest

Im 16, i had sex right before my period and he didnt pull out.. i got my period for the second time about 4 days after my period ended and it stop for 3 days and came back. Im not sure whats going on.. someone please give me answers(:

October 7, 2015 - 2:32pm
Maryann Gromisch RN Guide (reply to Anonymous)

Hello Anonymous,

This must be very concerning and unusual. You need to schedule an appointment with either your pediatrician or at this point, a gynecologist.

Because the menstrual cycle is regulated by a precise balance of hormones, there is most likely a hormonal imbalance causing this.


October 8, 2015 - 8:21am
EmpowHER Guest

Hi, I am 24yrs old married. I have irregular periods till a year before my marriage. After consultanting a doctor it got to normal. After marriage again my periods are irregular. When I consult a doctor, by the tablets next period will be on time but heavy bleeding. Then again irregular. From 5months we didn't have any sex. My periods are irregular but whenever period it will be for more than 7days and heavy bleeding. Last month I consulted doctor for heavy bleeding, by the tablets I got my period on time but still heavy and I got it 2times in this month and both times heavy and for 5days. Is there any problem?

September 25, 2015 - 10:10am
Maryann Gromisch RN Guide (reply to Anonymous)

Hello Anonymous,

There is definitely a problem. Heavy and prolonged menstrual bleeding is called menorrhagia. This condition is caused by hormonal imbalance, dysfunction of the ovaries, uterine fibroids, polyps, and adenomyosis, which occurs when glands from the endometrium become embedded in the uterine muscle.

Untreated, you are at risk for developing iron deficiency anemia.

Have you had a Pap smear and ultrasound?


October 8, 2015 - 8:27am
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

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
Enter the characters shown in the image.
By submitting this form, you agree to EmpowHER's terms of service and privacy policy
Add a Comment

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.

Menstrual Cycle

Get Email Updates

Related Checklists

Menstrual Cycle Guide

Susan Cody HERWriter Guide

Have a question? We're here to help. Ask the Community.


Health Newsletter

Receive the latest and greatest in women's health and wellness from EmpowHER - for free!


3894 Health


2472 Lives


2280 Lives
21 lives impacted in the last 24 hrs Learn More

Take Our Featured Health Poll

How much money annually do you spend on health and wellness products?:
View Results