Ovarian cancer is increasingly often diagnosed in women of childbearing age, with the inevitable question arising what course of proceeding to adopt next. In the case of an early-stage cancer, 5-year survival rates range from 75 to 80%. We are presenting here the case of a 21-year-old patient with postoperatively diagnosed early-stage ovarian cancer, who decided to undergo conservative surgical treatment, and was later able to conceive and bear a child. Several years on, she suffered a relapse. Patients of childbearing age with diagnosed ovarian cancer should be tested for BRCA mutation, and receive oncology consultation. As 9–15% of patients suffer relapse after conservative surgery conducted at an early stage of the disease, full resection is essential immediately after the patient’s childbearing plans have been completed.