A female client who has been taking oral contraceptives for the past year comes into the clinic for an annual exam. Which finding is most important for the practical nurse (PN) to report to the healthcare provider?

A. Breast tenderness is a common side effect of oral contraceptives and is generally not a cause for immediate concern unless accompanied by other symptoms. B. Left calf pain is a significant finding that could indicate deep vein thrombosis (DVT), a serious condition requiring prompt evaluation and potential treatment to prevent complications such as pulmonary embolism. C. A change in menstrual flow can occur with oral contraceptives but is usually less critical than other symptoms. It should be monitored but does not indicate an immediate problem. D. A weight gain of 5 pounds is a relatively minor side effect and not as urgent as symptoms suggestive of a serious condition like DVT.