MSFinals-3560

A 25 year old woman presents to her GP with breast pain. She gave birth 3 weeks ago and is exclusively breastfeeding. She reports a 4 day history of increasing pain in her left breast, which has not improved with continued feeding and expressing. During examination, she appears healthy, but her temperature is 38.5ºC. There is a small area of redness above the left nipple, which is sensitive to touch. She has no known allergies.
What is the best course of action for management?