The first thing to consider is the following: first of all, consider the mastitis, most often in the breastfeeding period, due to bacterial infection, the main symptom is the local redness, swelling, pain, no lumps inside the breast touch, it is very likely to form abscesses. Secondly, it may be due to the ovulation period, a small number of women in the ovulation period will appear in the breast without hard lumps but very painful, after the ovulation period the pain will disappear, before the menstrual period will also appear in the breast pain, breast swelling, touch pain, the end of menstruation can be relieved. It may be due to the enlargement and pain of the breasts after pregnancy, and there may be no hard lumps but pain in the breasts after childbirth, abortion and sexual intercourse, it is better to go to the hospital for examination.