Sorry to hear about your problem but I am glad that you are seeking medical attention for the same. Breast cancer
usually presents as a painful lump in the breast
and painful enlargement of the breast is usually not a sign of breast cancer. There might be still be a small chance that this could be something suspicious. To rule that out you should have this problem evaluated by a breast/ general surgeon
. Also you need to have an ultrasound
of the breast for better evaluation of the lump.
Please feel free to ask any other query or share your USG report.