Survivor since 2007
Usually you would feel a lump or a suspicious area in the breast is seen in a mammogram. Breast cancer doesn't just come in "one flavor".... there are different types of breast cancer that do not form a lump. That is why it is important to know what "normal" is for your breasts. On this site you can find the list of symptoms that could signal things are not right. It is most important to do monthly self-checks and have a yearly exam. Breast cancer doesn't follow strict rules because it is sneaky. There is NO WAY you or even a doctor can tell it a lump is ok or not without a mammogram, or other diagnostic tests. If in doubt, get yourself to your doctor NOW. Personally, I found my lump which turned out to be breast cancer 7 months after my yearly mammogram.
Take care, Sharon