Lumps on my breast. Should I contact my doctor?
Welcome to A2A, clamRI. Yes, you should contact your doctor. Since I see from your other posts that you are of school age, most likely what you are feeling is the natural lumpiness of the milk ducts, but you'll need to get it checked out to make sure.
I don't know where you are, but in some places there are special breast cancer screening services, manned by woman doctors.