Women’s health · Hormones

Medically reviewed by Melynda Fenn, FNP-C, Founder and Medical Director · Updated November 2026

“Is this menopause?” is one of the most common questions we hear, usually from women in their 40s who feel like their body has quietly changed the rules without telling them. Often the honest answer is: not yet. You’re probably in perimenopause, and that’s exactly why things feel so unpredictable.

Here’s how to tell the stages apart, how long each one lasts, what testing can and can’t tell you, and what helps, from the nurse practitioners at AZ Vitality and Wellness in Peoria.

The short answer: Perimenopause is the transition: several years of shifting hormones and changing periods, usually starting in your 40s. Menopause is a single point in time: 12 months in a row without a period. Everything after that is postmenopause. In the US, the average age of menopause is 52.

In this guide: At a glance · The stages · Signs of each stage · How long it lasts · Is there a test? · Pregnancy · What helps · How we help · FAQ

The words get used interchangeably, but they mean different things. Perimenopause is a stretch of years. Menopause is one day you can only spot looking back.¹

Swipe or scroll sideways if the table doesn’t fit your screen.

Sources: National Institute on Aging; STRAW+10 staging criteria.

Researchers use a staging system called STRAW+10 to map the road to menopause. Your period pattern, not your age, is the main clue to where you are.²

Periods are still regular, but flow or length may shift a little. Many women don’t notice anything yet.

Your cycle length starts changing by 7 days or more, and it keeps happening. Hot flashes or poorer sleep may begin.

You go 60 days or more between periods. Symptoms are often strongest here, and this stage usually lasts about 1 to 3 years.

Your final period, confirmed once you reach 12 months without one.

The years after. Early on, hot flashes often continue while estrogen settles low. Later, vaginal and bladder changes and bone health become more of a focus.

Period patterns are harder to read if you’ve had a hysterectomy or ablation, use hormonal birth control, or have PCOS. Then symptoms and history matter even more.²

No two women go through this the same way, but these are the changes we hear about most.¹

Irregular periods are normal in perimenopause. These are not, so call us or your gynecologist:⁶

Usually several years. Most women begin the transition between 45 and 55, and it plays out over years rather than months.¹

Hot flashes tend to be the longest-running symptom. In the SWAN study, frequent hot flashes and night sweats lasted a median of 7.4 years in total and kept going a median of 4.5 years after the final period. Women whose hot flashes started early in perimenopause tended to have them longest.³

Changes before 45? Tell your provider if your periods stop or become irregular before age 45. Menopause between 40 and 44 is called early menopause; before 40 it’s premature menopause, and that’s when testing helps most.⁵

Not a single one. During perimenopause, hormones like FSH and estradiol swing up and down, so one blood test can look normal one week and menopausal the next. Your cycle history and symptoms tell us more.^{2, 4}

Home menopause kits measure FSH in urine. The FDA says they show whether your FSH is elevated, not whether you’re definitely in perimenopause or menopause, and they shouldn’t be used to decide whether you can stop birth control.⁴

Labs still matter, just for different reasons: to rule out look-alikes such as thyroid problems, to check for anemia if your periods are heavy, and to get a baseline before treatment. We draw them here at our in-house lab in Peoria.

The most useful thing you can bring: a few months of notes on when each period starts, how heavy it is, and how you’re sleeping and feeling. A calendar or a period app works.

Yes. You can still ovulate, even when your periods are irregular. The National Institute on Aging advises using birth control for at least 12 full months after your last period.¹ Home FSH tests can’t tell you whether you’re still fertile,⁴ and hormone therapy is not birth control, so if you need both, we’ll plan for it together.

Treatment follows your symptoms, not a lab number. These are the main options.

The most effective treatment for hot flashes and night sweats, and it helps prevent bone loss. For women under 60 or within 10 years of menopause, the benefits usually outweigh the risks.⁷ In 2026 the FDA removed the heart disease, breast cancer and dementia statements from the boxed warning on the first hormone therapy products.⁸

If hormones aren’t right for you, the FDA has approved non-hormone pills for hot flashes, including fezolinetant in 2023 and elinzanetant in October 2025.⁹ Ask us whether one fits your health history.

Low-dose estrogen as a cream, tablet or ring treats vaginal dryness and pain with sex.⁷

Strength training, steady sleep and less alcohol help with mood, sleep and the weight shift many women notice. Here’s more on menopause weight gain.

Because we run labs in-house at our Peoria clinic, you don’t need a separate lab visit or a long wait for results. Here’s how a visit usually goes.

Your first consultation runs about 30 to 40 minutes. We go over your symptoms, cycle history, sleep, stress and overall health.

We draw the labs that fit your situation right in our clinic, so the picture is ready when we plan.

For some women that means hormone therapy; for others it starts with sleep, nutrition or stress. There’s no one-size-fits-all answer, and that’s the point.

We check in on how you feel and fine-tune the plan from there.

Melynda Fenn, FNP-C, and Kenra Johnson, FNP-C, both see women for hormone care. No referral is needed, and you can choose your provider. We don’t bill insurance, but HSA and FSA cards are welcome and Cherry payment plans are available. See current pricing.

Hormone visits start with a conversation, not a lab number.

Address: 7984 W Happy Valley Rd., Suite 115, Peoria, AZ 85383
Hours: Tue to Fri, 9:00 am to 5:00 pm · Sat, 10:00 am to 3:00 pm · Closed Sun and Mon
Your providers: Melynda Fenn, FNP-C, and Kenra Johnson, FNP-C
Referral: not needed. Book online, or call or text 602-540-3547.

Booking online? Choose “Hormone Replacement Therapy for WOMEN Consultation.”

Keep reading: Menopause Weight Gain: Why It Happens and What Helps · 10 Signs of Hormonal Imbalance in Women and Men · Hormone Replacement Therapy in Peoria · Women’s Hormones and Sexual Health

1. National Institute on Aging. What is menopause? Reviewed October 16, 2024.
2. Harlow SD, et al. Executive summary of the Stages of Reproductive Aging Workshop + 10 (STRAW+10). 2012.
3. Avis NE, et al. Duration of menopausal vasomotor symptoms over the menopause transition (SWAN). JAMA Internal Medicine, 2015.
4. US Food and Drug Administration. Home use tests: menopause.
5. Office on Women’s Health. Early or premature menopause.
6. American College of Obstetricians and Gynecologists. Perimenopausal bleeding and bleeding after menopause (FAQ).
7. The North American Menopause Society. The 2022 hormone therapy position statement. Menopause, 2022.
8. US Food and Drug Administration. FDA approves labeling changes to menopausal hormone therapy products. News release, Feb 12, 2026.
9. Pharmacy Times. FDA approves elinzanetant for menopause vasomotor symptoms. Oct 24, 2025.

What changed in this update (November 2026): We rebuilt this guide with a side-by-side comparison, the stages in plain language, how long perimenopause lasts, what testing can and can’t show, pregnancy and treatment questions, and links to every source. We also corrected our earlier answer on when perimenopause usually starts.

Medical disclaimer: This article is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.