I agree with what others have said about heat packs, showers etc. Also, ultrasound by the physio can really help to break up the lump (when combined with massage). Whenever I get a lump, I try to shift it myself first (which I am getting much better at now, 5 months down the track) - but if it gets really red & hot, or I feel yuck, I head to the Dr.

I've was prescribed keflex (Cephalexin monohydrate) the first time, which didn't work. Then Dr put me onto Fluclox (flucloxacillan), which works well. I've used Fluclox for all 3 bouts of mastitis . You need to take the antibiotics for 10 days (which is 2 scripts of the Fluclox).