What do i do for lump in breast.. could it be cancer?

Need for examination: It is not feasbile to provide a meaningful answer without examining the lump and it may require mammogram and/or biopsy. Most breast lumps are not cancer. Please see your doctor for an evaluation.

Get seen: A dominant breast mass should always be seen without delay by a physician. Be brave and make the phone call.

Can't tell you: If this is or isn't breast cancer. The breast lump should be medically evaluated. After full assessment - this question can be answered.