When breast cancer first develops, you may not have any symptoms, but as the cancer grows, it can cause changes to the breast. Some noticeable changes do not necessarily indicate cancer, but if you experience any of the following symptoms, you need to see a doctor immediately for an accurate diagnosis:

• One or more lumps in the breast that may or may not be painful
• One or more lumps in lymph nodes near the breast, under arm, or collarbone. These are sometimes painful.
• Thickening in the area in or around the breast
• Changes in the size or shape of the breast
• Nipple changes, such as discharge or a change in shape, along with tenderness 
• Breast surface changes such as ridges or a pitted texture like the skin of an orange
• Skin changes on the breast, areola, or nipple. It might look or feel different or be warm, swollen, red, or scaly.