My dr told me i have a cyst on my ovarie? why and how do i get rid of it?

Depends: Not all ovarian cysts need to be removed. Most are what are called follicular, luteal or functional cysts, and these will likley disappear on their own. Others require follow up and still others are suspicious for cancer are require prompt removal.

Can just happen: This can just happen to some people. Some women are prone to them. Usually are benign. Some can be related to the menstrual cycle. Some can be caused by endometriosis or other things. The pain is sometimes controlled with birth control pills or pain meds such as nsaids. The only way to remove is surgery depending on type of cyst.