How to do a breast self examination
Regularly examining your breasts allows you to become familiar with how your breasts usually look and feel and can help you more easily identify when a change occurs. Many women naturally have some lumpiness and asymmetry (differences between the right and left breast). The key to the breast self-exam is to learn how to find changes in the breasts that persist over time.
If you are menstruating, it is best to perform a breast self-exam about a week after menstruation (period) has ended, when breasts are usually less tender or swollen. If you no longer have periods, choose a regular day each month, such as the first or the fifteenth, to perform your examination.