Poor you, mastitis is just horrible. I've had mastitis 3x in the same breast and taken antibiotics each time as my fever spiked. I think the second time I got it back because I only took antibiotics for 5 days whereas the guidelines that I read online - after the fact - say 10 to 15 days to get rid of the infection (stupid dr). Think you might have a residual bit of infection that needs to be killed off with AB? I took strong probiotics to counter the possibility of getting thrush and that seemed to work. HTH.