In terms of timing of pregnancy after the end of treatment, conception after 2 years after the end of postoperative adjuvant therapy is recommended. This is because within 2 years after surgery is the peak of recurrence, and with adjuvant chemotherapy and radiotherapy after surgery, this is not a good time to have children. a retrospective study by AngelaIves et al. of 62 women in Australia who became pregnant after breast cancer found that secondary pregnancy was associated with improved overall survival in women at least 24 months after diagnosis (0.45,0.27 to 0.83). After two years of adjuvant therapy, if there is no sign of recurrence, fertility may be considered. However, if the patient is herself a patient with advanced breast cancer.