A typical cycle runs 21 to 35 days, and occasional variation — a late period during a stressful month — is normal. A persistent pattern is different. If your cycles are consistently outside that range, vary wildly month to month, or stop for months at a time, your body is signaling something worth investigating. Here is how to tell the difference.
Red flags: get prompt care
- Bleeding that soaks through a pad or tampon every hour for several hours
- Bleeding between periods or after sex, repeatedly
- No period for three or more months (and you're not pregnant or on hormonal contraception)
- Severe period pain that disrupts your life
- Any bleeding after menopause — always get this checked promptly
Common causes
PCOS is the most common cause of chronic irregularity in reproductive-age women. Others include thyroid disorders, high prolactin, perimenopause (changes often start in the late thirties), significant stress or under-fueling, intense exercise, some medications, and the months after stopping birth control. Most are very treatable once identified.
Why months without bleeding matter
When ovulation doesn't happen, the uterine lining can keep building without the regular shed of a period. Over time, that buildup needs evaluation — another reason that "no period for months" deserves a visit, not a wait-and-see year.
How we evaluate it
By video, we take a detailed cycle history — bring your best estimates, apps help — review your full symptom picture, and order targeted labs timed to your cycle. Most causes of irregular periods are identified and addressed without you ever leaving home. If you've been told before that irregular periods are "just how you are," a second opinion is reasonable — especially if no one ever checked your thyroid or androgens. "Common" and "normal for you" are not the same as "evaluated."
Book through our secure booking portal for a video visit with Bertine JeanLaurent, MSN, APRN, FNP-BC.
Frequently Asked Questions
Is skipping one period an emergency?
Usually not — a single late or missed period is common and often nothing. But take a pregnancy test if there's any chance, and book an evaluation if missed periods become a pattern.
Can birth control regulate my periods?
It can produce regular withdrawal bleeding, which looks like regulation — but it manages bleeding without treating root causes like PCOS or thyroid issues. Whether that's the right approach depends on your goals.