Just got diagnosed b/c of a surgery to remove a cyst overturning my ovary.

Sierra
I'm not exactly sure what endometriosis is, what is does, and how it's going to affect my life. Can anyone fill me in? I saw pictures of it and it looked like someone had burnt my insides with cigarettes. I get constant ovarian cysts and now they're not sure which one is causing the pain. So what exactly is this?