Why Do I Have Period Symptoms But No Period? Reasons for Cramps and Pain Without Menstruating

    September 28, 2021 17 October 2022 |
    Published 29 September 2021
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    Medically reviewed by Dr. Anna Targonskaya, Obstetrician and gynecologist
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    If you have period symptoms but no period, you might be wondering what’s going on. In this article, we’re going to explore reasons for having period symptoms without menstruating.

    Period pains but no period: Could I be pregnant?

    You've used Flo's online period calculator and know when you're due. All the  signs of PMS arrive but then... there's no sign of your period. So, what's going on? 

    Period symptoms but no period might actually be a sign of pregnancy. This is because when the embryo implants into the uterine lining, cramping may occur. Following this, breast tenderness, headaches, fatigue, and more symptoms occur as the body begins going through various changes to carry the fetus. If you suspect this might be what you’re experiencing, watch for these signs of pregnancy.

    A pregnancy test can detect pregnancy as early as 10 days after conception. But there are things that can make a positive urine home pregnancy test inaccurate, and here are some of them:

    • Not following test instructions or misinterpreting the results
    • Medications (aspirin, carbamazepine, and methadone)
    • Blood or protein in the urine

    It is also possible for a negative home urine test to be wrong:

    • Taking a test too early or checking results too quickly
    • Diluted urine (for a more accurate result, it is recommended to do the test in the morning when the concentration of hCG is highest)
    • The “hook effect,” which is something that happens when there are so many hCG molecules in the urine that they prevent the test from working properly. They are simply washed off the test, so the result will be negative.

    However, the absence of menstruation doesn’t necessarily mean you’re pregnant. There are lots of things that can cause period symptoms like cramps without actually having periods. 

    Causes of period symptoms without menstruating

    Premenstrual symptoms are common. In fact, about 90 percent of women state they experience cramps, bloating, headaches, fatigue, moodiness, tender breasts, and difficulty sleeping before their periods. So it makes sense for you to assume you’re about to get your period when you have these symptoms. But what if you experience moodiness, breast tenderness, bloating, or cramps, but no period? Is it simply a delayed period, or is it something else?

    Rigorous training

    This is most common for female athletes. According to studies, the risk of developing menstrual irregularities is three times higher for people who are involved in competitive sports. This is especially true among long-distance runners. A 2010 study of 87 women found that frequent, intense workouts affect the menstrual cycle. Around 50 percent of the participants who did intense training had menstrual cycle issues: 30 percent of them had a period delay, and 11 out of 17 long-distance runners didn’t get periods at all, a condition called amenorrhea.

    Another study of 187 Norwegian long-distance runners found that almost a quarter of them had menstrual disturbances (from minor ones to amenorrhea).

    Low weight

    Low body weight and body mass index (BMI) can also cause a missed period with some symptoms.

    Menstrual irregularities and amenorrhea are both associated with eating disorders. Studies have shown that people with a low body weight — less than 85 percent of what’s considered a healthy BMI for them — are four times more likely to have menstrual problems.

    According to one study, a sharp decrease in weight, especially in combination with stress, can lead to impaired ovulation and menstrual dysfunctions.


    Even though stress is unfortunately common, it can have a major impact on health, wellness, and the menstrual cycle. A 2010 study of over 1,600 working women found that stress at work and in the family was associated with menstrual problems in around 60 percent of participants. And a 2015 study of 100 medical students aged 18 to 23 and a study on Taiwanese nurses found that high stress levels are associated with irregular menstrual periods.


    There are certain medications that can also cause period symptoms, but no period. For instance, these medications affect hormone levels that can affect the menstrual cycle:

    • Hormonal contraceptives
    • Hormonal medication for endometriosis treatment (leuprolide)

    Hormonal birth control, such as the pill or injection, contains synthetic hormones that help regulate your cycle and prevent pregnancy. If you’ve recently started taking a new form of birth control, it might take your body some time to adjust. Usually, this adjustment period lasts from a few weeks to several months. During this time, it’s common to skip a period, experience irregular periods, and have period symptoms without menstruation. Additionally, when you’re coming off birth control, you may experience similar effects.

    And here are some drugs that can disrupt the menstrual cycle as a side effect:

    • Recreational drugs
    • Psychotropic medications (such as antidepressants)
    • Blood pressure regulators (such as methyldopa)
    • Anti-nausea medicine (such as metoclopramide)

    Polycystic Ovary Syndrome (PCOS)

    Polycystic Ovary Syndrome (PCOS) is a disorder associated with hormonal imbalances. PCOS can cause the body to produce more of male androgen hormones, which can cause various issues. One of them is difficulty regulating the menstrual cycle, resulting in skipped, irregular, or late periods.

    If you suspect you might have PCOS (common symptoms include excess body hair, male pattern baldness, irregular periods, and acne), it’s important to see a health care provider for consultation.

    Thyroid conditions

    The thyroid gland regulates many metabolic and hormonal functions, including body temperature, heart rate, menstrual cycle, and more. But nutritional deficiencies, stress, autoimmune diseases, and other things can disrupt how the gland functions. There are two different conditions that might trigger menstrual disturbances: underactive and overactive thyroid


    It’s important to remember that having period symptoms but no period doesn’t necessarily mean you’re pregnant. There are a variety of reasons you might miss a period or experience a delayed period. Taking a home pregnancy test about five days after you were expecting your period can help you figure out what’s going on, as can listening to your body and the clues it’s giving you. From there, you can do what’s best for you, your health, and your life.


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    History of updates

    Current version (17 October 2022)

    Medically reviewed by Dr. Anna Targonskaya, Obstetrician and gynecologist

    Published (29 September 2021)

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