Menstrual periods often occur every 21 to 35 days. But you may be different. Missed or irregular periods must be looked at in terms of what is normal for you.
Menstrual periods often aren't regular during the first few years after your period starts. It may take several years for the hormones that control menstruation to reach a balance.
Pregnancy is the most common cause of a missed period. If you might be pregnant, treat yourself as if you are pregnant until you know for sure. Use a home pregnancy test as the first step to find out if you are pregnant.
If you aren't pregnant, other causes of missed or irregular periods include:
Remember, you can still become pregnant even though you don't have periods. Practice birth control if you don't wish to become pregnant.
If you've skipped a period, try not to worry. It isn't uncommon to miss periods now and then. Unless you're pregnant, your cycle likely will return to normal next month.
Many things can affect how your body responds to a symptom and what kind of care you may need. These include:
You have answered all the questions. Based on your answers, you may be able to take care of this problem at home.
Pain in adults and older children
Shock is a life-threatening condition that may quickly occur after a sudden illness or injury.
Adults and older children often have several symptoms of shock. These include:
Many prescription and nonprescription medicines can affect the menstrual cycle. A few examples are:
Based on your answers, you may need care soon. The problem probably will not get better without medical care.
Based on your answers, you may need care right away. The problem is likely to get worse without medical care.
Based on your answers, the problem may not improve without medical care.
Based on your answers, you need emergency care.
Call 911 or other emergency services now.
Sometimes people don't want to call 911. They may think that their symptoms aren't serious or that they can just get someone else to drive them. Or they might be concerned about the cost. But based on your answers, the safest and quickest way for you to get the care you need is to call 911 for medical transport to the hospital.
Here are some ways to care for yourself when you have missed or irregular periods:
Do a home pregnancy test if you've had sex since your last period. If the result is positive, practice the following good health habits until you see your doctor:
If the home pregnancy test is negative but you still have pregnancy symptoms, it's a good idea to see your doctor to confirm the results. Practice good health habits until you see your doctor.
Call a doctor if any of the following occur during self-care at home:
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