Once you completed the exam lying down, you have to do it standing up or sitting
. Follow all the steps explained above, except that this time you are sitting or standing. Don't rush, make sure you work slowly and carefully to ensure you did a proper check. A mammogram can miss 10% of breast cancer so if you feel a lump that didn't show up on your mammogram, don't just ignore it. Tell your doctor and show him where you felt it so a proper exam can be done. It might seem terrifying to wait while tests are done, but it's important and needs to be done, it's always better to know that being in the dark about something.