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What makes my period shorter than usual, and when should I see a doctor?

Many women suffer from menstrual cycle fluctuations and irregularities, but when the period suddenly becomes shorter and is limited to one or two days, this may indicate normal things such as pregnancy, or it may be a sign of more serious things such as infection with some diseases.

What makes the menstrual cycle shorter?

As it is known, the natural menstrual cycle occurs approximately once every 28 days, and its duration varies from one woman to another, as it may not exceed 3 days for some and may extend to more than 7 days for others.

There is no problem if your period is short or long as long as it is constant, but if the number of days of your period suddenly changes and becomes shorter, this may indicate various factors, the most important of which are:


If your period stops after only one or two days unusually, pregnancy may be a reason for this.

When the fertilized egg attaches to the lining of the uterus, implantation bleeding can occur, and you may think it’s your period.

This type of bleeding is usually lighter than normal menstrual bleeding. It usually lasts about 24 to 48 hours, and is usually light pink to dark brown.

Implantation bleeding usually occurs about 10 to 14 days after conception, although it does not necessarily affect all women, but only 15 to 25% of them, according to Healthline.

ectopic pregnancy

An ectopic pregnancy occurs when a fertilized egg attaches to the fallopian tubes, ovaries or cervix instead of the uterus, and is commonly called a tubal pregnancy.

One of the first signs of an ectopic pregnancy is vaginal bleeding with pelvic pain, which at first appears similar to a period.

But in this case, care must be taken because if the fertilized egg continues to grow in the fallopian tube, it may cause the tube to rupture, which can lead to severe bleeding.

Therefore, seek medical help immediately if the short cycle is accompanied by the following symptoms:

Severe pain in the abdomen or pelvis, usually on one side
Fainting or dizziness
Abnormal vaginal bleeding
A miscarriage can cause bleeding that you may mistake for your period.

Many women may not realize they have had a miscarriage because they may not have known they were pregnant from the start.

The bleeding may be a light spot or a heavy flow, and the length and amount of bleeding depends on the length of the pregnancy.

Other symptoms of a miscarriage include:

Abdominal or pelvic pain
Back pain
Breastfeeding can cause your period to be delayed, lightened, or shortened, due to prolactin, a hormone that helps produce breast milk, which may also prevent menstruation.

9 to 18 months after giving birth, the cycle will be normal again for women who are breastfeeding.

Birth control and other medications

Hormonal birth control pills or injections, as well as intrauterine devices (IUDs) can make your periods shorter and lessen their flow as well.

The hormones in birth control pills can thin the lining of the womb, thus thinning and shortening your period.

Other medications that may affect the length or flow of your menstrual cycle include:

blood thinners
Antipsychotics or antidepressants
Herbs, such as ginseng
tamoxifen (a medicine used to treat certain types of breast cancer)

Many different lifestyle factors can affect the length of your period, including changes to your daily routine. These changes include:

1. Being stressed and stressed: High levels of stress can affect your hormones, which in turn can affect your menstrual cycle.

If you’re under stress, your period may be irregular, shorter or lighter than usual. Or you may not have a period at all.

2. Significant weight loss: Losing a lot of weight can lead to irregular periods.

Eating disorders, such as anorexia nervosa or bulimia, can stop your periods completely.

3. Excessive exercise: Vigorous physical activity can lead to irregular periods or a missed period.

thyroid disease

Thyroid disease causes the body to produce too much or too little thyroid hormone, while this hormone plays a vital role in your menstrual cycle.

When your body doesn’t produce the right amount of this hormone, your cycle can become irregular and sometimes shorter than usual.

Symptoms of thyroid disease can vary, depending on the type of disorder you have. But the most common symptoms include:

Weight loss or gain

Difficulty sleeping or feeling very tired

Heart rate faster or slower than usual


With PCOS, your body produces more male hormones than normal, which affects the length of your menstrual cycle.

As a result, you may have a much lighter and shorter cycle, or you may not have one at all.

Other symptoms of PCOS can include:

Excessive facial hair
deeper voice
Mood Swings
pelvic inflammatory disease (PID)

It is a type of infection that occurs when bacteria enter the vagina and spread to the uterus and upper reproductive system. This infection is usually transmitted through sexual contact.

Pelvic inflammatory disease may cause irregular periods, but they are usually heavier, longer or more painful.

Other factors

Other less common factors that may cause a shorter or irregular cycle include:

cervical stenosis
Premature ovarian failure (POF), also known as premature menopause
Asherman’s syndrome, which is caused by scar tissue or adhesions within the uterus or cervix
Pituitary disorders
Uterine or cervical cancer



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