11 Most Common Reasons For Missed Period But Not Pregnant

Reasons For Missed PeriodIf you are not trying to get pregnant, the absence of normal menstrual cycle can strike fear into your heart because a missed period is often considered as one of the major signs and symptoms of pregnancy. But, the fact is that there can be an array of other reasons as well.

So, if your period is delayed, it does not always mean you are pregnant. Following are eleven other possible reasons (other than pregnancy) of a missed period.

Your Calculation Is Probably Not Correct

Most women generally believe that the average menstrual cycle should be twenty-eight days long. But, it is very important for you to understand that the actual period always varies from one woman to another. So, it is very much likely that you have simply miscalculated your period. However, if your calculation is correct and you are also aware of when you ovulate, you should expect your period at least 15 days after you ovulate. This way, it will be very easy for you to keep track of your periods.


Not having enough body fat can also be a very common reason for missed period. In fact, if you are too much underweight, your periods can even stop all together. Such condition is referred to as amenorrhea. Therefore, if you are a professional athlete or someone who works out to an extreme, being underweight can be a major cause of a delayed period. Typically, weight gain is an obvious solution for this problem.


If you are carrying around too much weight, it can also be a common reason for not having regular periods. Too much weight might interfere with your cycles and might even stop them. The obvious solution for this problem is to lose some weight; this way, your cycles can easily get back to normal.

New Medication

Change in medications may also result in missed or delayed period. Therefore, if you have recently started taking a new medication, you should talk to your doctor about it. Some methods of birth controls may also have certain side effects. So, make sure you consult your doctor before trying anything new.

Your Working Schedules Frequently Change

Another reason why you are having a missed period is that you probably are not listening to your body clock. Frequent changes in your daily schedules (such as going from night shifts to day shifts and vice versa) may also result in irregular periods.

Suffering From Certain Illness

If you are suffering from some kind of illness, it may also result in missed periods. It can be a sudden short illness or a longer one. There is nothing much you have to do about it. Just take care of your health. This is often a temporary condition. Your period will get back to normal when illness goes away.

Too Much Stress

We all know too much stress is not good for health. But, not many women know that stress can also be a major cause for missed period. The amount of GnRH hormones can be decreased substantially because of stress. Because of this, you may not be able to menstruate or ovulate. So, get back on schedule and relax. Stay away from things that cause stress – this is particularly very important if you are trying to get pregnant.

If you are facing the “missed period not pregnant” problem, it can be because of the mental stress you are probably suffering from, such as heavy workload at office, argument or fight with spouse, or any other thing that makes it stressful for you to bear.

It is important to note that there are certain hormones needed during a menstrual cycle and hypothalamus is responsible for those hormones. Stress often results in malfunctioning of hypothalamus, which eventually may cause both menstruation and ovulation to stop temporarily. In most cases, when the stress decreases, menstruation gets back its normal condition.

Birth Control Pills

Birth control pills or contraceptives may also be one of the most common reasons behind the “missed period not pregnant” problem. If you have been taking these pills regularly, it may result in ireregular or late or missed periods. What is more important to note is that even after you have stopped taking the birth control pills, it takes some time (which can be as long as six months) before the regular cycle can resume. Amenorrhea may also be caused because of implanted and injected contraception.

Excessive Exercise

The hormone function in women is also often interrupted because of excessive exercise, which eventually results in irregular, late, or missed periods and lack of ovulation. In particular, those who are suffering from certain eating disorders, such as bulimia or anorexia, are more likely to experience this problem. Interruption in menstruation cycle is also common among those who participate in rigorous sports training, such as running, gymnastics, and ballet.

The State Of Menopause

Menopause refers to the point of time in your life when you lose your physical ability to menstruate or ovulate. You can reach this state because of your age – when you become too old for such things. But, there can be some other factors as well that can cause a state of menopause, such as a surgical procedure (hysterectomy) or the use of certain chemicals as part of chemotherapies.

The Period Of Peri-Menopause

When you reach a non-reproductive age, you are said to be in a state of menopause. The period of time during which the transitioning from reproductive age to the state of menopause takes place is referred to as peri-menopause. During this time, it is common to experience irregular periods.

The periods at this stage can be less frequent or more frequent, heavier or lighter – it just cannot be normal. However, you can still be very much fertile at this stage, so, if you do not want to get pregnant, you must continue to follow your birth control methods. If none of the above reasons are applicable in your case, missed period can definitely be a major possible sign of pregnancy. A simple pregnancy test can be an easy way to confirm whether you are pregnant or not.

Neyaz Akhtar