Why do I feel nausea during my period?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Nausea during your period is a common symptom experienced by many people who menstruate. It is often linked to hormonal shifts that affect your digestive system, gut function, and mood throughout the menstrual cycle. These changes can trigger queasiness, bloating, and general stomach discomfort, especially in the days leading up to and during menstruation.

While period-related nausea is usually harmless, it can sometimes signal underlying conditions like endometriosis, PMS, PMDD, or gastrointestinal issues. Understanding the cause of your symptoms is the first step toward finding relief. Take a free, instant, and confidential symptom check to help identify what may be behind your nausea and get personalized guidance on your next steps.

Reviewed for medical accuracy: 07/15/2026

Important Next Steps

Learn why period nausea is happening Discover if your symptoms need care See likely causes of menstrual nausea Find OTC relief for period nausea Find doctors for menstrual health concerns Understand home remedies for period nausea Check if nausea signals something serious

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Explanation

Nausea during your period can happen because of changes in your body. Research shows that the gut and mood can be affected by the menstrual cycle. This means that your stomach and how you feel can change when you have your period.

Why Does This Happen?

Gut Changes: During your period, your gut might not work the same way it usually does. This can make you feel sick to your stomach.
Mood Symptoms: Feeling sad or anxious can also happen during your period. These feelings can make nausea worse.

What Can You Do?

Relax: Try to stay calm and do things that make you happy.
Eat Carefully: Eating small meals that are gentle on your stomach can help.

If you're experiencing concerning symptoms and want to better understand what might be causing them, try our free AI symptom checker for personalized health insights. Remember, it's okay to ask for help if you need it.

(References)

Hannan K, Li X, Mehta A, Yenokyan G, Payne JL, Shea AA, & Hantsoo L. (2024). Mood symptoms and gut function across the menstrual .... Hormones and behavior, 39265472.
Bernstein MT, Graff LA, Avery L, Palatnick C, Parnerowski K, & Targownik LE. (2014). Gastrointestinal symptoms before and during menses in .... BMC women's health, 24450290.
Eryilmaz G, & Ozdemir F. (2009). Evaluation of menstrual pain management approaches by .... Pain management nursing : official journal of the American Society of Pain Management Nurses, 19264282.

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