Ovulation cramps (mittelschmerz)
Why ovulation can hurt
As a follicle grows and releases an egg, it stretches the ovary surface and releases a little fluid and sometimes blood, which can irritate nearby tissue. The pain typically sits on the side that ovulated that cycle, so it may switch sides month to month.
How long ovulation cramps last
Usually anywhere from a few minutes to about 24–48 hours. The ache is mild to moderate and may come with light spotting or the egg-white discharge of the fertile window.
Timing is the clue: mittelschmerz lands roughly mid-cycle, about two weeks before your next period. An ovulation calculator can tell you whether your pain matches your fertile window.
Seek medical care if you have
- Severe or worsening pain, or pain lasting more than 2–3 days
- Pain with fever, vomiting, or fainting
- Sudden sharp pelvic pain (to rule out ovarian cyst or appendicitis)
Frequently asked questions
Is it normal to feel ovulation every month?
Some people feel it most cycles, others never do — both are normal. What matters is that it is mild and brief; severe or lengthy pain deserves a check-up.
Does ovulation pain mean I am fertile that day?
It suggests ovulation is happening around then, so yes — you are likely in your fertile window. Use it alongside other signs rather than as an exact marker.
More free tools
In this section: Ovulation
References
- NHS – Ovulation pain
- ACOG – Dysmenorrhea and pelvic pain
- Mayo Clinic – Mittelschmerz
This page will be reviewed by a named OB-GYN before launch. Educational content — not medical advice.
Medical disclaimer: This tool and content are for educational purposes only and are not a substitute for professional medical advice. If something feels wrong, see a doctor.