You should definitely ask to be referred to a gyno, and have a Trans Vaginal Ultra sound and CA125.
you are describing can definitely be symptoms
of a cyst
, which, more often than not are benign. (I had to google the mettlewhatsit..never heard that before!!). With your family history, you do definitely need to get this checked out thoroughly and be pro active with your doctors, if you are not satisfied or feel that you need further investigation, then let them know.