My understanding is that if cancer returns within six months of chemo, the cancer is considered resistant to platinum based chemotherapy. If the cancer takes longer than six months to recur, it is considered platinum sensitive. Those who have platinum sensitive cancer retain the possibility of receiving another round of platinum based chemo, or sometimes a second surgery. Those with platinum resistant cancers have other drug options, like PARP inhibitors.
Be sure to continue testing CA125 and HE4,S for a rise in either one. If there are three consecutive rises in either, even if within the normal range, a CT scan should be called for.
And, try to follow all the good health directions your doctor gives you.
I am currently on metformin and beginning my 6th month without recurrence.
Hoping and praying!