Common Menopur side effects may include: Abdominal pain, Breast tenderness, Constipation, Cramps, Dizziness, Feeling of fullness in the abdomen, Flushing, General feeling of being unwell, Generalized pain (body, back, joint), Headache, Nausea, vomiting, or diarrhea (not continuing or severe), Pain, rash, swelling, or irritation at place of injection, Sweating Stop using the medication and seek medical help as soon as possible if you see following symptoms: Abnormal vaginal bleeding, Flu-like symptoms, Migraine, Mood changes, Pain when urinating, Difficulty breathing, Signs of a blood clot in blood vessels, Signs of stroke, Symptoms of a severe allergic, Symptoms of ovarian hyperstimulation syndrome or OHSS, e.g.:, Abdominal or pelvic pain or discomfort, Bloating, Diarrhea, Difficulty breathing, Decreased amount of urine, Nausea, Rapid weight gain, Vomiting, Unusual pain with menstrual bleeding