 <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]  return after you stop using this medication. If you miss a period and have missed an injection, or if more than 13 weeks pass between injections and you think you might be pregnant, contact your doctor for a pregnancy test. Remember that this medication 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 medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: nausea/vomiting that doesn't stop, mental/mood changes (such as new/worsening depression), changes in sexual interest/ability, swelling of the ankles/feet, bone pain, unusual changes in vaginal bleeding (such as continuous spotting, sudden heavy bleeding), severe stomach/abdominal/pelvic pain, unusual weakness/tiredness, dark urine, yellowing eyes/skin, seizure. This medication may increase your risk of breast cancer. Tell your doctor right away if you have symptoms such as a lump in the breast or nipple discharge. Ask your doctor for more details. Rarely, people using this medication have had very serious (possibly fatal) problems from blood clots (such as heart attack, stroke, blood clots in the lungs or legs </s>