Also, you should not have sex until your doctor says it's okay. It usually takes 4 to 6 weeks to get back to a normal routine. Chemotherapy, which uses medicines to kill cancer cells, is recommended after surgery for most stages of ovarian cancer.Chemotherapy is usually started 1 to 4 weeks after surgery.After a hysterectomy, call your doctor if: 1  You have bright red vaginal bleeding that soaks one or more pads in an hour, or you have large clots. 2  You have foul-smelling discharge from your vagina. 3  You are sick to your stomach or cannot keep fluids down.hemotherapy is usually started 1 to 4 weeks after surgery. After a hysterectomy, call your doctor if: 1  You have bright red vaginal bleeding that soaks one or more pads in an hour, or you have large clots. 2  You have foul-smelling discharge from your vagina. 3  You are sick to your stomach or cannot keep fluids down.