 <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]  occur, especially during the first few weeks of use. Headache, nausea, breast tenderness, or weight gain may also occur. If any of these effects last or get worse, tell your doctor promptly. After your body adjusts to this product, it is normal to have fewer bleeding days during your menstrual periods, and some women stop having periods altogether. This will not affect your ability to become pregnant after stopping use of this product. Remember that this medication device has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this device do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: stomach/abdominal pain, vomiting, lumps in the breast, mental/mood changes (such as new/worsening depression), unusual changes in vaginal bleeding (such as continuous spotting, sudden heavy bleeding, missed periods), dark urine, yellowing eyes/skin, unusual headaches (including headaches with vision changes/lack of coordination, worsening of migraines, sudden/very severe headaches). Using an intrauterine device (IUD) may increase your risk for a rare but serious pelvic infection (pelvic inflammatory disease-PID), which can </s>