Ovarian cancer 3 c.found fingertip tumor in lung, assuming now its in stage4 but now has a fluidly mass in between stomach and liver, has it spread

Possibly: Most ovarian cancer is stage iii when diagnosed. Finding tumor between the stomach and liver is consistent with this. Do not assume a lesion in the lung is metastatic cancer unless there is a biopsy to show this. The lesion you describe could be a lot of things other than cancer.

See below: Yes it is possible for the cancer to spread to the lungs.