 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  is placed. Leave the top bandage on for 24 hours. Keep the smaller bandage on as directed by your doctor, usually for 3 to 5 days. Keep the bandage clean and dry. The rod must be removed after 3 years and can be replaced if continued birth control is desired. The rod can be removed at any time by a trained health care professional if birth control is no longer desired or if there are side effects.The side effects of Nexplanon Subdermal: Nausea, stomach cramping/bloating, dizziness, headache, breast tenderness, acne, hair loss, weight gain, and vaginal irritation/discharge may occur. Pain, bruising, numbness, infection, and scarring may occur at the site where the rod is placed. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Your periods may be early or late, shorter or longer, heavier or lighter than normal. You may also have some spotting between periods, especially during the first several months of use. If bleeding is prolonged (more than 8 days) or unusually heavy, contact your doctor. If you miss 2 periods in a row, contact your doctor for a pregnancy test. Remember that this medication has been prescribed </s>