OVARIAN CYST

An ovarian cyst is a fluid-filled sac that develops on a woman's ovary. They're very common and don't usually cause any symptoms.
Most ovarian cysts occur naturally and disappear in a few months without needing any treatment.

Symptoms of an ovarian cyst
An ovarian cyst usually only causes symptoms if it splits (ruptures), is very large, or blocks the blood supply to the ovaries.

In these cases, you may have:

pelvic pain – this can range from a dull, heavy sensation to a sudden, severe and sharp pain

pain during sex

difficulty emptying your bowels

a frequent need to urinate

heavy periods, irregular periods or lighter periods than normal

bloating and a swollen tummy

feeling very full after only eating a little

difficulty getting pregnant – although fertility is unaffected in most women with ovarian cysts (see ovarian cysts and fertility)

Treating ovarian cysts
Whether an ovarian cyst needs to be treated will depend on:

its size and appearance

whether you have any symptoms

whether you've been through the menopause

Surgical treatment to remove the cysts may be needed if they're large, causing symptoms, or potentially cancerous.