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Heavy Periods, Mood Swings, and Bloating: Could Hormones Be Involved?

Maybe it’s the week before your period when your mood feels unpredictable. Or the bloating that seems to arrive out of nowhere. Perhaps your periods have become heavier, your breasts feel unusually tender, or your sleep isn’t what it used to be.

These experiences are common. But that doesn’t mean you have to ignore them.

The symptoms worth paying attention to

Changes in estrogen, progesterone, and other hormones can influence how you feel throughout your cycle.

Some of the symptoms women report include:

  • Menstrual changes: Heavier periods, stronger cramps, irregular cycles, and breast tenderness.
  • Mood changes: Irritability, anxiety, emotional sensitivity, or mood swings.
  • Physical changes: Bloating, fluid retention, headaches, and fatigue.
  • Skin changes: Breakouts or changes in skin sensitivity.
  • Sleep changes: Difficulty falling asleep or staying asleep, particularly around hormonal transitions.

These symptoms aren’t specific to one hormonal imbalance. Stress, thyroid conditions, medications, and other health factors can produce similar experiences.

Look for patterns, not isolated symptoms

One of the most useful things you can do is start paying attention to when symptoms appear.

Do headaches consistently arrive before your period? Does your sleep change at certain points in your cycle? Have your periods become progressively heavier?

Try tracking your symptoms for one or two full cycles, including your mood, sleep, digestion, menstrual flow, and physical changes.

Patterns may begin to emerge that aren’t obvious day to day.

When should you investigate?

Symptoms that persist, worsen, or interfere with daily life deserve attention.

Heavy bleeding, particularly bleeding that lasts more than seven days or soaks through menstrual products hourly, should be discussed with a healthcare professional.

The goal isn’t to self-diagnose every symptom. It’s to build a clearer picture of what’s happening in your body.

references
  1. Gore AC, et al. EDC-2: Endocrine Society’s Second Scientific Statement on Endocrine-Disrupting Chemicals. Endocr Rev. 2015. doi:10.1210/er.2015-1010
  2. Zierau O, et al. Role of female sex hormones, estradiol and progesterone, in mast cell behavior. Front Immunol. 2012. doi:10.3389/fimmu.2012.00169
  3. Wang HH, et al. Estrogen and cholesterol gallstone formation. Biochim Biophys Acta. 2009. doi:10.1016/j.bbalip.2009.06.006
  4. Bulun SE. Endometriosis. N Engl J Med. 2009. doi:10.1056/NEJMra0804690
  5. Bulun SE. Uterine fibroids. N Engl J Med. 2013. doi:10.1056/NEJMra1209993
  6. Gut microbial β-glucuronidases and the estrobolome. https://pmc.ncbi.nlm.nih.gov/articles/PMC6901331/
  7. Arafah BM. Increased need for thyroxine during estrogen therapy. N Engl J Med. 2001. doi:10.1056/NEJM200106073442302
  8. Egner PA, et al. Broccoli sprout beverage and airborne pollutant detoxication. Cancer Prev Res. 2014. doi:10.1158/1940-6207.CAPR-14-0103

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Press
24.09.2026
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Shilpi Shares Her Entrepreneurial Journey with Harvard Women in Entrepreneurship

Qyn Labs founder and CEO Shilpi Gupta recently joined Harvard Women in Entrepreneurship for an inspiring conversation about building a deep tech company, putting customers first, and creating meaningful change through innovation.

What began as an opportunity to share Qyn's mission and the journey behind building a new approach to hormone health became a thoughtful exchange with the next generation of women entrepreneurs.

The students brought ambitious ideas, insightful questions, and a clear understanding of the problems they hope to solve. Their curiosity and enthusiasm reinforced an important belief: entrepreneurship isn't defined by a perfect résumé or a traditional path. It's driven by the willingness to ask difficult questions, challenge existing approaches, and build solutions that make a meaningful difference.

Throughout the conversation, Shilpi shared several lessons from her own entrepreneurial journey and the experience of building Qyn.

You Don't Need a Perfect Résumé to Build a Deep Tech Company

Building a deep tech company requires curiosity, persistence, and a willingness to understand a problem at every level.

While experience can be valuable, it isn't the only path to innovation. Sometimes, approaching an established industry with a fresh perspective allows entrepreneurs to recognize opportunities that others have overlooked.

For aspiring founders, Shilpi emphasized the importance of understanding the layers of the problem they're trying to solve and remaining curious enough to keep learning.

You don't need to have every answer before you begin. You need to be willing to ask questions, seek expertise, and continue learning as you build.

Be Obsessed with the Customer, Not Just the Technology

Technology should exist to solve a real problem.

At Qyn, that principle guides the development of an at-home, blood-based hormone measurement system designed to help women better understand how their hormone levels change over time.

For a woman navigating perimenopause, menopause, or hormone therapy, the goal isn't simply to have access to another piece of technology or another health metric.

She wants to understand what's happening in her body, how her hormones are changing, and what those changes might mean for her individual experience.

By keeping the needs of women at the center of product development, Qyn is working to bridge the gap between isolated hormone measurements and a more personalized understanding of hormone health.

It's a reminder that innovation begins with listening to the people you're building for.

Credibility Is Earned, Not Marketed

Trust is essential when building a product that people may rely on to better understand their health.

For Shilpi, credibility comes from demonstrating real results, being transparent about what a technology can and cannot do, and showing people how their personal health information will be protected.

As Qyn continues to develop its technology, these principles remain central to the company's approach.

Building trust requires more than communicating a compelling vision. It means doing the work to support that vision through science, responsible product development, and a commitment to the people the technology is intended to serve.

Build Something You Believe In

Shilpi also encouraged the students to think deeply about what motivates them to become entrepreneurs.

Her own experiences inspired her to question why women have historically had such limited visibility into their changing hormone levels and what could be possible if hormone measurement became more accessible.

That personal connection helped inspire the creation of Qyn.

But she emphasized that founders don't necessarily need to have experienced a problem themselves to build a meaningful solution.

What matters is finding a problem they genuinely care about solving and being honest about their motivation for pursuing it.

Entrepreneurship requires persistence, especially when building something new. Having a meaningful connection to the work can help sustain that commitment through the inevitable challenges of bringing an idea to life.

Looking Ahead to the Next Generation of Women Entrepreneurs

The conversation at Harvard was an opportunity to share the Qyn story, but it was also a reminder of the extraordinary potential of the next generation of women founders.

Their ambition, curiosity, and thoughtful questions reflect a future in which more women are not only participating in innovation but helping define the problems worth solving.

A special thank you to the Harvard Women in Entrepreneurship board for hosting Shilpi and to every student who participated in the conversation and stayed afterward to continue asking questions.

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We look forward to seeing what you build.

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Interested in what we're building at Qyn?

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Qyn is developing an at-home, blood-based hormone measurement system designed to help women better understand their changing hormone levels over time.

Join our free waitlist to follow our progress, receive early updates, and learn about opportunities to be among the first to experience Qyn.

Join the Qyn Waitlist

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Press
24.08.2026
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Shilpi Gupta on DigitalHealth InvestorTalk: The Consumer Home Healthcare Revolution

The future of healthcare is moving closer to home, and hormone health is no exception.

Qyn Labs founder and CEO Shilpi Gupta recently joined host Steve Wardell on the DigitalHealth InvestorTalk podcast to discuss the rise of at-home medical testing and how emerging technologies are giving consumers more opportunities to take an active role in understanding their health.

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As healthcare continues to evolve beyond traditional clinical settings, Shilpi shares how Qyn is working to bring convenient, blood-based hormone measurement into the home, helping women navigate perimenopause, menopause, and hormone therapy with greater visibility into their changing hormone levels.

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From the growing demand for personalized health data to the future of consumer-driven healthcare, their conversation explores what happens when women have access to more information about their bodies, more frequently.

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Listen to the full conversation on Spotify:

https://open.spotify.com/episode/69RsX7FR7aSwwubqNPqw5y

Press
16.09.2026
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Inside Qyn: Building Hormone Intelligence at the Intersection of Science and AI

What does it actually take to build a new way of measuring and understanding hormones?

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Qyn founder and CEO Shilpi Gupta sat down with Matt Crane on The Lantern at the Wyss Institute at Harvard University to talk about what’s happening behind the scenes at Qyn — from the science of at-home blood-based hormone measurement to the intelligence layer designed to connect hormone trends with signals people are already tracking through their wearables.

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It’s also a conversation about building deep technology itself. Shilpi discusses why getting the underlying measurement right has to come before adding AI, what the team has learned while developing Qyn, and why creating something new in health requires both speed and scientific rigor.

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For anyone curious about not only what Qyn is building, but how we’re building it, this is a closer look inside the work.

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Watch the full conversation on The Lantern →

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