Ovulation can feel like a dull ache or a sudden sharp twinge on one side of your lower abdomen, typically lasting anywhere from a few minutes to a day or two. Not everyone feels it, but many people notice at least one physical sign, whether it’s that telltale pelvic pang, a change in discharge, or subtler shifts like breast tenderness and bloating.
The Pelvic Pain: Mittelschmerz
The most recognizable sensation of ovulation is a one-sided pain in the lower abdomen, known in medical terms as mittelschmerz (German for “middle pain,” since it lands mid-cycle). It can show up as a dull, crampy ache similar to period cramps, or as a sharp, sudden jab that catches you off guard. Some cycles it’s barely noticeable; others it’s enough to make you pause what you’re doing.
The pain usually sits on whichever side is releasing an egg that month, so it may switch sides from cycle to cycle. Two things likely cause it. First, the fluid-filled sac (follicle) holding the egg swells to about two centimeters before it ruptures, stretching the surface of the ovary. Second, once the follicle breaks open, a small amount of blood and fluid leaks out and can irritate the tissue lining your abdomen. That irritation is what sometimes turns a brief twinge into a longer, achy sensation.
For most people, the discomfort fades within a few hours, though it can linger up to 48 hours. A heating pad or an over-the-counter pain reliever is usually enough to manage it.
Changes in Cervical Mucus
One of the most reliable signs that ovulation is approaching is a shift in vaginal discharge. In the days leading up to egg release, cervical mucus becomes wet, stretchy, and slippery, often compared to raw egg whites. You might notice it on toilet paper or your underwear. This consistency is functional: the slippery texture helps sperm travel more efficiently through the reproductive tract.
Earlier in your cycle, discharge tends to be sticky or pasty, and there may be very little of it. As estrogen rises toward ovulation, the mucus increases in volume and becomes progressively more clear and elastic. You can test it by pressing a bit between your thumb and forefinger. If it stretches an inch or more without breaking, you’re likely in your most fertile window. After ovulation, discharge dries up again or turns thicker and white.
Breast Tenderness and Bloating
The hormonal surge around ovulation can produce effects well beyond the pelvis. Sore or tender breasts, particularly around the nipples, are common in the hours just before and after the egg is released. The same hormonal shifts can slow digestion, leading to gas, bloating, and mild water retention that makes your lower abdomen feel puffy or tight.
Some people also experience light spotting, usually just a pinkish or brownish streak on toilet paper. This is caused by the small amount of blood released when the follicle ruptures. It’s typically brief and much lighter than a period.
Heightened Senses and Mood Shifts
Less obvious but still real: some people notice a stronger sense of smell during the second half of their cycle. Research suggests this may be linked to increased sensitivity to certain pheromones during the fertile window. A heightened sense of taste has also been reported.
You may feel a bump in libido around ovulation, though the cause is more complex than it sounds. While estrogen peaks right before the egg is released, a controlled trial published in Psychoneuroendocrinology found that short-term increases in estrogen alone had little direct effect on sexual desire. Other factors, including testosterone fluctuations and psychological cues, likely play a bigger role. People in relationships tend to notice the libido shift more than those who are single.
Headaches and mild nausea can also surface as estrogen and progesterone levels swing. If you’re already prone to hormonal headaches or migraines at other points in your cycle, you’re more likely to experience them around ovulation too.
The Temperature Shift You Can’t Feel
After ovulation, your basal body temperature (your temperature first thing in the morning, before you get out of bed) rises slightly. The increase is small, typically between 0.4°F and 1°F (0.22°C to 0.56°C), so you won’t feel warmer. You’d only catch it by tracking with a sensitive thermometer over several cycles.
The key detail: the temperature rise happens after the egg has already been released, so it confirms ovulation rather than predicting it. The egg itself survives less than 24 hours once it leaves the ovary, which is why people trying to conceive often pair temperature tracking with mucus observation or ovulation predictor kits. Those kits detect a surge in luteinizing hormone (LH) that begins roughly 36 hours before ovulation, giving you a heads-up rather than a look back.
Normal Pain vs. Something Else
Ovulation pain is usually mild to moderate, one-sided, and resolves on its own within a day or two. If pelvic pain is severe, lasts longer than two or three days, or comes with fever, vomiting, lightheadedness, or cold and clammy skin, something else may be going on. Ovarian cysts can mimic mittelschmerz but tend to produce a heavier sense of fullness, pressure, or a pain that comes and goes over a longer stretch. A large cyst can sometimes twist the ovary, cutting off blood flow, which causes sudden, intense pain that needs immediate attention.
Endometriosis is another condition that can cause mid-cycle pain and is sometimes mistaken for normal ovulation discomfort. The difference is usually in the severity and persistence: endometriosis pain tends to be more intense, may involve both sides, and often worsens over time rather than staying predictable cycle to cycle. If your mid-cycle pain is escalating or interfering with daily life, it’s worth getting an evaluation rather than assuming it’s just ovulation.