Hello,

Thank you for asking your query.

This lump could be anything - A breast abscess or even a cancerous lesion requiring attention. In your case certain factor like - location near the nipple, painful swelling, superficial swelling etc, point towards a breast abscess or infective process which can be easily cured. But we cannot be 100% sure unless the swelling fully evaluated by means of physical examination and a needle aspiration. Since you have history of breast cancer in family you need to visit a Surgeon for further evaluation, without any delay.

The following needs to be done
1. A physical examination
2. A needle aspiration or Fine Needle aspiration cytology if the lump.
These are simple procedure and Your Doctor can guide you in this.
Hope this helps

Please feel free to ask any followup questions.