Missed period on birth control never happened before

i missed my birth control and i got my period, will i have it again on the date i was orgianally supposed to?

It’s possible that this month you won’t get your period when you expect it. It may come, but it may not. It may be lighter than usual or you may get just a little spotting. 

Missing 1 or more birth control pills or making a mistake with the ring or the patch can throw your cycle off for a month or 2. The important thing to do is to keep using your birth control and start the next pack on time, even if your period doesn’t come during that week.

Depending on what kind of birth control you use, when you missed it, and for how long, you may need to skip your hormone-free time, or use backup birth control until you get back on track with your method. Find out more about birth control methods and what to do if you make a mistake.

If you had sex after missing your birth control, take a pregnancy test if you don’t get your period when you expect it. If you had unprotected sex within the last 5 days, you still have time to take emergency contraception.

Tags: birth control, periods, the patch, the pill, the ring

Why am I not getting my period on the placebo week?

The synthetic hormones in the pill prevent pregnancy by thinning out the lining of the uterus, stopping ovulation and preventing fertilization. The lining of the uterus (also called the endometrium) is what sheds during menstruation. Birth control is pretty powerful, so sometimes it can thin out your endometrium so much that there’s nothing to shed during your period. This is why it’s common for many women to not get their period on birth control, even during their placebo pill week.

Is it normal to not be having a period during the placebo week?

Menstruation is triggered by a drop in the hormones estrogen and progesterone, both of which are artificially produced by the pill. This means that menstruating on the pill isn’t a real period so much as it is “withdrawal bleeding” produced by a lack of artificial hormones. Your period is not a medically necessary process. It’s just your body’s way of telling you that you’re not pregnant. This is why it’s totally safe to use birth control to skip your period entirely, either by using extended-cycle birth control pills that allow for four periods a year, or by skipping the placebo week of your 21 or 28 day pack. It’s also normal to experience breakthrough bleeding outside of your placebo week—in fact, 1 in 5 women will experience this when starting a new pill. That being said, this breakthrough bleeding should stop after 3 months of pill use. If it continues, contact your doctor.

Should I worry about pregnancy if I didn't get a period on the placebo week?

If you’re on birth control and not getting your period during your placebo week, there’s no need to worry, especially if you know you’ve been taking your pill every day. It’s normal for your period to be lighter and shorter than usual, especially if you’ve been on birth control for a while. About 10-20% of people experience very light or no period after their sixth pill pack, while 10% of people do not experience any withdrawal bleed. Take a pregnancy test if you’ve missed your period and are experiencing symptoms of pregnancy, such as morning sickness or breast soreness.

If you’re on the progestin-only minipill, know that only 50% of minipill users experience regular menstruation, so expect the unexpected when it comes to your period.

Want to have less frequent periods?

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• Definition
  • What is birth control?
• Symptoms
  • Symptoms of missed period on birth control
• Causes
  • Causes of missed period on birth control
• Diagnosis
  • Diagnosing missed period on birth control
• Treatments
  • Treatments for missed period on birth control
• Related Resources
  • Related Resources - Why Did I Miss My Period on Birth Control?

What is birth control?

It can be stressful to miss your period, especially when you’re taking your birth control consistently. Stress, changes in diet and exercise, and hypothyroidism may be few reasons behind missed periods.

Birth control comes in many forms. One of the most common is hormonal birth control pills — which use various combinations of estrogen, progesterone, or synthetic hormones to prevent pregnancy. You may take the pill every day, with placebo pills during your period; receive a shot; or utilize some form of implant. 

Many women take birth control as a form of family planning and contraceptive. Others take it as a way to manage other health issues, such as uterine fibroids or hormonal imbalance. While some forms of birth control suppress menstrual periods, many regulate it. On many forms of birth control, you will still have your regular menstrual period. Birth control may even make your period more consistent. 

It can be stressful to miss your period, especially when you’re taking your birth control consistently. There are several reasons why you might miss your period on birth control, including stress, changes in diet or lifestyle, changes in exercise routine, or the long-term effects of using birth control.

If you miss your period, you should consider taking a pregnancy test and following up with your doctor to determine any underlying causes. 

Symptoms of missed period on birth control

When you miss your period on birth control, it is important to be aware of other symptoms. A missed period may occur in tandem with symptoms that are similar to premenstrual symptoms or early pregnancy, such as:

• Nausea or vomiting
• Tender breasts
• Fatigue or exhaustion
• Pain in your lower back
• Frequent urination

If you miss your period and experience any additional symptoms, plan on taking a pregnancy test and following up with your primary care physician. 

Causes of missed period on birth control

There are several potential causes of a missed period when you’re taking birth control. They may include: 

Stress

Stress is one of the most common causes of a missed period. Research shows that women under stress during their cycle are much more likely to experience irregular or missed periods.

Stress has a significant impact on the hormones within your body. These hormones have the ability to create changes or a delay in your menstrual period.

Changes in diet and exercise

Any drastic changes in eating habits can affect your menstrual cycle. Diet can affect hormone levels and ovulation. If either are disrupted, you may experience a delayed or missed period.

If you are incorporating new or increased physical activity into your regular activity, it may be disrupting your menstrual cycle. Prolonged periods of intense exercise can alter your hormone levels, leading to missed or suppressed menstruation.

Weight loss

Significant weight loss can lead to lighter or missed periods. The presence of fat in your body can increase the level of specific hormones in your body. Losing dramatic amounts of weight will impact your hormone levels. This often leads to irregular periods and can be an underlying cause of a missed period on birth control.

Long-term effects of continuous birth control

Many women use birth control pills as their contraceptive method of choice. Some women who use continuous birth control — or birth control that limits periods to a few times a year — may experience very irregular periods or no periods at all.

Hypothyroidism

Hypothyroidism directly affects hormone levels. Women who experience hypothyroidism almost always have irregular menstrual cycles.

Pregnancy

Even if you are on birth control, a missed period can be a sign of pregnancy. Birth control pills have a failure rate of just under 10%. If you have missed a period or are experiencing other symptoms of pregnancy, you should consider taking a pregnancy test or talking to your doctor.

SLIDESHOW

Diagnosing missed period on birth control

If you are experiencing missed periods and other symptoms, your doctor will likely start with a physical exam. They may also evaluate any underlying causes with a:

• Pelvic exam
• Ultrasound
• MRI or other imaging
• Blood test 

Treatments for missed period on birth control

If you are experiencing one or more missed periods, your doctor will likely conduct an exam and recommend tests to determine the underlying cause. They will suggest a treatment plan, depending on the results. Treatment may include:

• Hormonal birth control
• Hormone therapy
• Over the counter pain relief
• Lifestyle or dietary changes
• Stress management

Health News

Medically Reviewed on 12/22/2020

References

American Pregnancy Association: "Types of Birth Control."

BMC Women's Health: "Factors associated with menstrual cycle irregularity and menopause."

Indian Journal of Endocrinology and Metabolism: "Stress and hormones."

Journal of Clinical and Diagnostic Research: "To Evaluate the Effect of Perceived Stress on Menstrual Function."

Medicine: "Effects of intensive training on menstrual function and certain serum hormones and peptides related to the female reproductive system."

Postgraduate Medical Journal: "The missed menstrual period."

Therapeutics and Clinical Risk Management: "Evaluation of extended and continuous use oral contraceptives."

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