A breast self-exam should be done by all women to detect for any changes that may occur in the breast.  The best time to do breast sef-exams is right after your period has ended.  If you no longer have periods then pick a particular day of the month, i.e., the first day of every month.  This is one of the most important preventative measures you can do for yourself.  It is important that you get familiar with how your breasts normally feel.  Then if a lump appears you will know it is something new and can have it checked by your gynecologist.  If you have fibrocystic breasts, it is important that you decrease caffeine intake and take Vitamin E supplements.  Any changes or lumps should be discussed with your physician.