Ovarian cyst???

Do I have cyst? I think I have cyst on my ovaries !! Dull & Consistent pain that hardly ever goes away! Had for months. Only when I'm not thinking about. It comes and goes but for the most parts seems dull & consistent. Sharp pains occasionally, nothing really extcruciatingly painful. Mostly in the lower right abdomen, sometimes the pain moves around. Can anyone tell me all the things they experience? Scared that it could be something else! Like appendix, std, or even endometris??