Can starting the pill cause sore breasts?

Starting the birth control pill can cause sore breasts as a side effect. This is because the pill contains hormones that can cause changes in breast tissue, leading to tenderness, soreness, or discomfort. These side effects are usually temporary and typically go away within a few weeks or months as your body adjusts to the pill. If the breast tenderness persists or becomes severe, it's important to consult with a healthcare professional to rule out any other underlying medical conditions.