A couple months ago I had discovered a small lump on my breast, and it disappeared after my period thankfully. flash forward months later and it's back. I discovered it at the bottom of my right breast and went in for a manual breast exam with my doctor. She told me she definitely felt it, but it was probably nothing to worry about. She told me it was half a centimetre and movable. A few days later, that lump seemed to have vanished, and a new one appeared. It is palpable, at the top of my breast, exactly where it was the first time. It feels round and movable and I can feel a few other small lumps in the general area. I am booked for an ultra-sound but I need peace of mind, the fear is taking over my life. I am 20 years old, 105 pounds and have no family history, however I do smoke cigarettes. I have no skin changes or lumps under my arms. Could my right breast just be naturally lumpy? Could this actually be breast cancer?