Ovarian cysts are fluid-filled sacs or pockets in an ovary or on its surface. Women have two ovaries — each about the size and shape of an almond — on each side of the uterus. Eggs (ova), which develop and mature in the ovaries, are released in monthly cycles during the childbearing years.
Many women have ovarian cysts at some time. Most ovarian cysts present little or no discomfort and are harmless. The majority disappears without treatment within a few months.
However, ovarian cysts — especially those that have ruptured — can cause serious symptoms. To protect your health, get regular pelvic exams and know the symptoms that can signal a potentially serious problem.

Risk factors

Your risk of developing an ovarian cyst is heightened by:

• Hormonal problems. These include taking the fertility drug clomiphene (Clomid), which is used to cause you to ovulate.
• Pregnancy. Sometimes, the cyst that forms when you ovulate stays on your ovary throughout your pregnancy.
• Endometriosis. This condition causes uterine endometrial cells to grow outside your uterus. Some of the tissue can attach to your ovary and form a growth.
• A severe pelvic infection. If the infection spreads to the ovaries, it can cause cysts.
• A previous ovarian cyst. If you've had one, you're likely to develop more.

Ovarian Cysts Symptoms

Although there are not much symptoms of ovarian cysts as they progress slowly and steadily but sometimes they can cause:-

• Pelvic pain — a dull or sharp ache in the lower abdomen on the side of the cyst
• Fullness or heaviness in your abdomen
• Bloating
• Bleeding or spotting during the cycle
• Dull or aching pain like cramps in the abdomen
• Irregular menses
• Swelling in the abdomen
• Pain during sexual intercourse