Small bumps on pregnant breasts may or may not be normal, and may be a manifestation of diseases, such as nipple eczema-like breast cancer, breast fibroma, breast cysts and other diseases. 1. Normal phenomenon: after pregnancy, due to changes in hormone levels, pregnant women’s breasts will increase significantly, the nipple will become black, the areola range will be expanded, the color of the areola will deepen, and the areola may grow a small pimple, which is called Montgomery’s nodes, Montgomery’s nodes have no effect on the breast, and the late stage will not affect the baby’s milk intake, the entire breastfeeding period will continue to exist and will not subside, do not require special treatment, just pay attention to the breasts, the breast fibroids, breast cysts and other diseases. There is no need for special treatment, just pay attention to breast hygiene and don’t wear too tight underwear. 2. Nipple eczema-like breast cancer: It is essentially breast cancer of nipple origin, scientifically known as Paget’s disease. The nipple of patients with eczema-like breast cancer is invasive lesion, i.e., the nipple gradually shrinks or even disappears in the process of breaking and healing, and the patients usually do not have complete nipple structure and have small lumps in their breasts when they go to the clinic. 3. Breast fibroma: because during pregnancy and postpartum, the estrogen secretion of the patient will be particularly vigorous, which may stimulate the breast and lead to the enlargement of breast fibroma, thus causing the patient to have small lumps on the breast. 4. Breast cysts: may be caused by endocrine dysfunction, generally after pregnancy, the body’s hormone level is abnormal, the phenomenon of small lumps in the breast may occur. If you feel uncomfortable, go to the breast surgery department or dermatology department of regular hospitals to get a clear diagnosis and active treatment.