Ultra sound .cause not known

I am 30 year old no living children 3 misscaridges I have been curled over in pain so tired and trying for ababy . My doctor gave me blood work and  internal exam and referred me for scan a week later I got a letter saying they have gave me a ppointment ASAP at the hospital today on a Sunday.  For a ultra sound scan the kast rime I had one I had precancour on stage 2 and a cyst 4cm on my right ovary   I relaly am concerned as I dont wana loose my ovary before i have my chance to have  children . Life as got difficult as I am getting older and form being young wanted to be a mom . I.hope it is nothing and nothing is found ..