Ovulation Pain (Mittelschmerz) Explained
One-sided cramp, what's normal, when to worry
What Is Mittelschmerz?
Mittelschmerz — German for middle pain — is the mild to moderate discomfort some people feel during ovulation. It's experienced by roughly 20-40% of people who ovulate.
The pain is usually felt on one side of the lower abdomen and can vary from a brief, sharp twinge to a dull ache lasting several hours or even a day or two. The side may change from month to month.
The leading theories are that the pain comes from either the stretching of the follicle before it ruptures, or from the small amount of fluid and blood released when the follicle ruptures, which can irritate the lining of the abdomen.
What It Feels Like
Mittelschmerz typically presents as a one-sided lower abdominal discomfort. Some people describe it as a sharp, sudden pinch that lasts only minutes. Others experience a dull, crampy ache that can persist for hours.
You might also notice a small amount of spotting around the same time. Some people have mild bloating or a sense of fullness in the pelvis. The intensity can vary from cycle to cycle.
If you're tracking your cycle, ovulation pain can actually be a useful data point that adds confidence to your ovulation tracking.
When to Be Concerned
Typical mittelschmerz is mild to moderate and resolves on its own within a day or two. However, certain types of mid-cycle pain deserve medical attention.
Seek prompt medical care if the pain is severe (could indicate a ruptured ovarian cyst), if it's accompanied by fever, nausea, or vomiting, if it persists for more than 2-3 days, or if there's heavy vaginal bleeding alongside the pain.
Chronic or severe mid-cycle pain could be related to endometriosis, pelvic inflammatory disease, or ovarian cysts. Over-the-counter pain relievers like ibuprofen can help manage typical mittelschmerz.
Continue reading
- You're Ovulating — What's Happening Inside— 5 min read
- Peak Fertility: What to Know— 5 min read
- Why Your Libido Spikes at Ovulation— 4 min read
Quick Tip
Note which side you feel ovulation pain on — it can help confirm ovulation and even tell you which ovary released the egg this month.
This content is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider with questions about your health.
Track your cycle with Naya
Read phase-specific articles like this one inside the app. Free to download, no account required.