Have had mastitis twice before so didn't panic yest morning when woke to lumpy, aching, flushed breast, high temp (had the shivers abs shakes), nausea, light-headedness etc. Calmed down over the day, had hot showers, massaged breast, fed as much as poss and expressed. Some blood came out of nipple at feeding time. My worry is that both other times the lump was about size of 10p piece. This time is size of smallish banana, starting above the breast and taking up most of it. Is this worrying? Do you think antobiotics are needed? TIA