Changes in Your Menstrual Cycle During Perimenopause: What Is Normal and When To Worry

Perimenopause is the natural transitional phase that occurs right before menopause. This is when a woman's ovaries gradually begin making less oestrogen. For some women, this phase may start in their 40s; while for others, it may begin in the early 30s as well. During this time, a woman’s body goes through a number of changes. Perimenopause also alters your menstrual cycle. While some of these changes in your periods may be completely normal, others may need your attention. Therefore, it is important to separate between what is natural and what’s not. To understand this better, read ahead.

Let us take a look at what Dr Pooja C Thukral, Associate Director, Department of Obstetrics and Gynaecology, Cloudnine Group of Hospitals, Delhi, has to say about it.

Do Perimenopause Lead To Changes in Menstrual Cycle?

Before diving deep into how perimenopause causes changes in menstrual cycle, it is important to understand what it is. Dr Thukral says that perimenopause is the phase leading up to menopause and usually begins in the mid-to-late 40s, although some women may experience it earlier. She adds, “During this time, oestrogen and progesterone levels fluctuate unpredictably, causing irregular ovulation and changes in menstrual bleeding.”

The expert explains, “For many women, the first sign of perimenopause isn't hot flashes, it's a change in their menstrual cycle. Periods that were once predictable may suddenly become irregular, heavier, lighter, shorter, or farther apart. While these changes are common, it's important to know which ones are a normal part of hormonal transition and which require medical attention.”

A study, published in the Springer Nature journal, focuses on the changes in menstrual patterns during perimenopause. These aremainly driven by factors such as fluctuating hormone levels such as oestrogen and progesterone. Therefore, as women enter this transitory phase, ovulatory cycles become increasingly irregular. This leads to notable shifts in period frequency, flow duration, and volume. 

The research shows that it is common for cycles to shift between unusually short, extended, light, or exceptionally heavy. The study confirms that erratic periods are a patent clinical feature of perimenopause. 

Normal Changes in Period During Perimenopause 

Now let us tell you about the changes in periods, which are absolutely normal during perimenopause. Dr Thukral says that during this phase, you may notice:

• Periods arriving earlier or later than usual.
• Cycles becoming shorter or longer.
• Lighter or heavier bleeding than before.
• Skipped periods followed by a normal cycle.
• Occasional spotting between cycles.
• More pronounced PMS symptoms such as mood swings, breast tenderness, bloating, and cramps.

“These changes occur because ovulation becomes less regular, leading to hormonal fluctuations that affect the uterine lining,” adds the expert.

How To Spot Abnormal Period Changes During Perimenopause?

But how can you spot the ‘abnormal’ changes in your periods during this phase? Answering this, Dr Thukral says your gynaecologist will review your menstrual history, symptoms, and medical background to diagnose this. She adds, “Depending on your age and symptoms, investigations may include blood tests to check for anaemia and thyroid disorders, pelvic ultrasound, Pap smear, or endometrial biopsy when indicated.”

So can irregular periods caused by perimenopause be treated? The expert says, “Yes. Treatment depends on the underlying cause and the severity of symptoms. Options may include hormonal therapy, oral contraceptive pills, progesterone treatment, iron supplements for anaemia, or minimally invasive procedures for conditions such as fibroids or polyps.”

When Should You Seek Medical Attention?

Dr Thukral says that not every change in your period should be attributed to menopause. She adds that you need to seek medical evaluation if you experience:

• Very heavy bleeding that soaks through a pad or tampon every hour.
• Bleeding lasting longer than seven days.
• Bleeding after sexual intercourse.
• Frequent bleeding between periods.
• Bleeding after menopause (12 months without a period).
• Severe pelvic pain or large blood clots.

“These symptoms could indicate conditions such as uterine fibroids, endometrial polyps, thyroid disorders, adenomyosis, or, in rare cases, endometrial cancer. Although menstrual changes are expected during perimenopause, they should never be ignored if they are excessive or affect your quality of life. Regular gynaecological check-ups help ensure that normal hormonal changes are distinguished from conditions requiring treatment,” concludes Dr Thukral.

ALSO READ- 7 Reasons for Irregular Periods in Your Late 30s: Why It Could Be Perimenopause

Conclusion

To summarise, during perimenopause, oestrogen and progesterone levels in women fluctuate unpredictably. This leads to causing irregular ovulation and changes in menstrual cycle. Periods may suddenly become irregular, heavier, lighter, shorter, or farther apart. However, if you witness changes such as very heavy bleeding, periods that last longer than seven days, bleeding after sexual intercourse, frequent bleeding between periods, or severe pelvic pain or large blood clots, then you should visit a doctor. You should not ignore such extreme changes or symptoms that affect your quality of life. Moreover, opt for regular gynaecological check-ups to ensure that your hormonal changes are within the normal spectrum.