Hi they call me mummy, my experience probably isn't of much help to yourself right now, but I too have been going through a similar situation. It slightly frustrates me how easily my gp seems to prescribe antibiotics almost on a weekly basis for what they first thought was mastitis. After explaining to them that I had a total duct excision back in September for unexplained bloody discharge they then suggested it be cellulitis. My breast is often very painful, red and what I can only describe as internal itch! Have you been referred to the breast clinic for further investigation? At least there the nurses and drs specialise in breast conditions and may be a little more helpful in diagnosing your symptoms. I know personally it has become very frustrating but if antibiotics and antifungals have not helped in your case other options may be explained at the clinic. Have you noticed these symptoms for a while or have they only appeared in the recent weeks?
Best wishes hannah