Your doctor has prescribed this medication for you because they believe the benefit you will receive is greater than the risk of any side effect. Most people using this medication do not have serious side effects. However it is best to notify your doctor right away if you start receiving these side effects listed; Nausea, vomiting, headache, dizziness, mood swings, trouble sleeping, weight gain/loss, acne, breast swelling/tenderness, change in sexual interest, unwanted hair growth, or hair loss may occur.
Some side effects may may be serious, if any of these occur, seek medical attention right away; changes in vaginal bleeding (e.g., spotting, breakthrough bleeding, changes in menstrual flow, no menstrual bleeding), change in vaginal discharge, depression, swelling of the hands/feet, frequent/burning/painful urination, yellowing eyes/skin, dark patches on the skin or face (melasma).
This medication may rarely cause a serious problem with blood clots. Seek immediate medical attention if you experience any of the following: chest/jaw/left arm pain, weakness on one side of the body, slurred speech, sudden vision changes (e.g., blurred/double vision, loss of vision, bulging eyes), confusion, sudden severe headache, severe dizziness, fainting, trouble breathing, coughing up blood, pain/redness/swelling/weakness of the arms/legs, calf pain/swelling that is warm to the touch.