Is it possible for breast lumps to be crushed?

Patient's question:

Recently, I feel like there are small lumps in my breasts. I want to ask, when I have sex with my boyfriend, will the small lumps on my breasts be crushed by him? Could it be cancer? If it is cancer, what are the symptoms? Will it be crushed? Will it spread? I'm very scared!!!
First follow-up question: Can you elaborate on this? What is breast fibrocystic change?
Second follow-up question: What medication can treat it? Do I need surgery?

Doctor's answer:

1. Breast tissue structure
　 The breast is composed of milk ducts, alveoli, lobules, and a honeycomb-like adipose tissue. It consists of 15-20 milk duct systems forming its cystic lobules, known as breast lobules.
2. Common types of breast diseases
　 Breast diseases include breast deformities, inflammation, trauma, and tumors, but clinically, the most common are breast cancer, benign breast tumors, and breast inflammation. Breast diseases include breast cancer, mastalgia, fibroadenoma, nipple discharge, mastitis, breast hyperplasia, breast tuberculosis, breast eczema, and nipple cracking. Among these, breast cancer is the most significant, especially since the 21st century, the incidence of breast cancer has increased significantly.
3. Diseases to consider when a lump is found in the breast
　 Normal breast tissue is soft, uniform, and elastic. If the breast tissue becomes thickened, rough, or develops one or more nodules, or if lumps of varying sizes appear, these are abnormal changes in the breast. There are many reasons for lumps in the breast, and before differential diagnosis, it is important to first pay attention to the examination methods of the breast to avoid misdiagnosis and missed diagnosis. Common diseases of breast lumps include:
　 （1）Fibroadenoma: The most common tumor in the breast, often found in young women, and can occur in one or both breasts. It is more common in the outer upper quadrant, usually solitary, but occasionally multiple. The lump is oval or round, with a smooth surface, medium hardness, clear boundaries with surrounding tissue, and no adhesion to the skin. The lump can be easily moved.
　 （2）Breast hyperplasia: More common in middle-aged women. Often multiple, irregularly shaped, and relatively hard lumps are found in the breast.