I had triple negative breast cancer in 2021 when I was 31. I had chemo, a lumpectomy and radiotherapy, and have been all-clear since. But I've just found this area or 'mass' in the other breast, and now I'm really worried about what it might be. My breasts are quite small and really dense and fibrous-feeling, so it's really hard to tell if something is a true lump. I went for my yearly mammogram in Nov last year, so that won't come around again for some time yet. This doesn't feel like a lump, more like a big clump of mass; I'm sorry for the rubbish description, I'm just trying to convince myself it isn't anything serious!