Suggest Treatment For Thrush On Nipple And Mastitis While Breastfeeding

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Hi my wife is expressing milk and her nipples have turned blue/purple, she has had a lot of problems eg...... thrush on the nipple/ mastitis and she has been on antibiotics for two week and the breast is still very sore to breast......actually painful.....she went to a doctor today and she wasn't to sure what it was..... HELP!!!! She is still beast feeding and is putting up with the pain.....What to do?