Breast pain that occurs before your period and goes away after it starts is not connected with breast cancer. It is probably related to water retention. Some simple home remedies to reduce premenstrual water retention include getting plenty of exercise, limiting salt and sodium intake, avoiding caffeine and alcohol, and eating a healthy diet. You could try over-the counter pain relievers like acetaminaphen, but be sure to read the label carefully and don't take more than the recommended dosage. If these steps don't help, you probably should see a doctor to see if there is an underlying problem that needs attention. I hope these steps help you.