Thanks for your query.
The symptoms that you have are definitely those of endometriosis
This is presence of ectopic endometrial tissue.
that means, the tissue that normally lines the uterine cavity
, is present OUTSIDE the uterine cavity.
The cyst also sounds very much like an endometrioma
is a must because that will not only provide a route for treatment, but will confirm the diagnosis also.
yes, as you are trying to conceive, you need a skilled surgeon, to preserve as much of your ovaries as possible while removing the diseased portion.