Important thing is whether you have a lactating breast abscess pr non- lactating? Non- lactating may need further work up.
Next Steps
You can consult Dr. Rohan Khandelwal. There are various least invasive procedures like USG guided aspiration.
Health Tips
Use sports bra / well breast supporting brasserie. Avoid unnecessary antibiotics intake.
If u are a lactating mother not able to feed the affected breast milk , then u should evacuate it manually. Otherwise the accumulated milk can be a source for pus.