Since this is a new lump that's been noticeable for over a month, it qualifies as a breast change, and all breast changes should be seen and evaluated by a doctor. There's every chance this has nothing to do with cancer; breast lumps can have many different causes. However, you do need to rule out cancer, even at your age when it's incredibly rare; so please see a doctor, OK?

BTW, in case you're uninsured, not having health insurance is not a good reason to avoid the doctor; speak to the folks at your local hsopital, and ask them what kind of programs they have for women without insurance. There's every chance your diagnostic process will be quite inexpensive, and possibly even free. Good luck - PJH