Most medications can cause side effects which can be defined as an unwanted response to a medication when it is taken in normal doses. Side effects can range from mild or severe, temporary or permanent. Side effects are not experienced all patients who take this medication. Many side effects can be managed, and others may go away over time. Common side effects may include: mild nausea, diarrhea, bloating, stomach cramps, dizziness, spinning sensation, hot flashes, mild headache, joint pain, breast pain or tenderness, cough, acne or increased hair growth, changes in weight, vaginal itching, dryness, or discharge sudden numbness or weakness, especially on one side of the body, sudden headache, confusion, pain behind the eyes, problems with vision, speech, or balance;, fast or pounding heartbeats, chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling, unusual or unexpected vaginal bleeding, migraine headache, nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes), swelling in your hands, ankles, or feet, fever, chills, body aches, flu symptoms, a breast lump, symptoms of depression (sleep problems, weakness, mood changes)