Breast pain is not necessarily related to a cold, but a cold and fever may cause muscle aches and pains in the bones. Breast pain during breastfeeding can be caused by the following reasons: First, it may be due to milk stagnation, because the patient does not empty the milk in time, so that the residual milk in the breast is blocked, blocking the breast gland to form a mass, and not squeezed in time will appear pain. Secondly, pathological breast diseases can also cause breast pain, such as mastitis and mastopexy. Considering the complexity of the cause, it is best to go to the mammography department of a regular hospital for further examination and treatment according to the examination results.