Ovarian cysts are common, and most are harmless. They often form during the menstrual cycle and disappear on their own without causing any symptoms. However, certain changes in your body can signal that a cyst is growing, twisting, or has ruptured. Recognizing these warning signs is important for protecting your health.
Here are three specific signs that an ovarian cyst may need urgent medical attention:
Sudden, severe pelvic pain
A dull ache or mild discomfort on one side of your lower abdomen is common with a normal cyst. The situation changes when the pain becomes sharp, sudden, and intense. This type of pain — often described as stabbing or searing — can indicate that the cyst has ruptured (broken open) or that the ovary has twisted on itself, a condition called ovarian torsion.
Ovarian torsion cuts off blood flow to the ovary. Without prompt treatment, the tissue can become damaged. If you experience a sudden onset of severe pain that does not go away, or if it comes in waves and makes it hard to stand up straight, you should get to an emergency room or contact your healthcare provider immediately.
Pain accompanied by nausea, vomiting, or fever
Pelvic pain alone warrants attention, but when it is paired with other symptoms the risk level increases. Nausea and vomiting that come on quickly alongside pelvic pain can be a sign of ovarian torsion or a ruptured cyst. A fever, especially one that develops after the pain starts, may indicate an infection — for example, if a ruptured cyst leads to peritonitis (inflammation of the lining of the abdominal cavity).
This combination of symptoms should not be managed at home with rest or over-the-counter pain relievers. It requires a medical evaluation to rule out serious complications. A healthcare team can run imaging tests, check your white blood cell count, and provide treatment to address the underlying cause.
Heavy bleeding or bleeding with dizziness
Some spotting or minor bleeding can occur with certain types of ovarian cysts, such as those related to the menstrual cycle. However, heavy vaginal bleeding — soaking through a pad or tampon every hour for several hours — is a red flag. So is bleeding that is accompanied by lightheadedness, dizziness, or fainting.
These symptoms can point to internal bleeding from a cyst that has ruptured and is leaking significant blood into the pelvic cavity. A large amount of blood loss can cause a drop in blood pressure and lead to shock. If you are bleeding heavily and feel like you might pass out, do not drive yourself to the hospital: call 911 or have someone drive you.
What to do if you suspect an urgent problem
If you have any of the signs above, the right step is to seek medical evaluation without delay. An ultrasound is often the first test a doctor uses to check the size and appearance of the cyst and to see if there is fluid or blood in the pelvis. Blood tests can check for signs of infection or significant blood loss.
Quick tip: If you have been diagnosed with an ovarian cyst before and you know its size, write it down. That detail can help the care team assess changes more quickly.
Routine follow-up is still important
Even if you do not have urgent symptoms, a known ovarian cyst should be followed by your healthcare provider. Most cysts resolve on their own, but regular monitoring — often with an ultrasound every few months — helps ensure that a cyst is not growing or changing in a way that could cause problems later.
