I realised a few weeks ago that there was a

Patient: I realised a few weeks ago that there was a small red bump forming near my nipple area and then one day I saw that it had formed what looked like a white head/bump. The next morning I saw that it had burst and I put a bandage over it thinking it was just a bad spot but over the last 2 days it hasn’t stopped leaking what looks like puss (tots gross). It also seems to have left a shallow “hole” I don’t really know how to describe it..what should I do exactly

Doctor: