After the ultrasound scan and the pictures on the screen of several noticeable black masses, especially in the lymph nodes, and while waiting for results, I did the next best thing -- doctor Google. 
Several hours later, I already self-diagnosed myself with breast cancer, but decided to wait for the official biopsy results and not to panic too early.
Biopsy results are not quick as they take multiple sample tissues and than the pathologist regrows the cells to figure out if the cells are cancerous, and, if yes, what type.
