It is important to be familiar with how your breasts normally look and feel through everyday activities (such as showering) so that you can identify if a new lump appears. Make sure you look at and feel your whole breast area frequently, including your breasts, armpits and up to your collarbone. A new lump is one of the most common signs of breast cancer so if you have found a new lump or any unusual change in your breast, it is important to see your doctor without delay.