Mastitis

I was diagnosed with mastitis 2weeks ago when I was extremely nauseous & vomiting, tired & sleeping all the time, always feeling sick I wouldn’t eat, pain on my left boob & was bigger than my right boob then I started seeing a lump on my areola so I went to my Ob & she put me on antibiotics 3x a day, they lasted a week. I felt better after the 2 shots she gave me.

I feel extremely better now , I’m not sick , boob is not heavy or painful but the lump is not gone yet on my areola, does this go away on its own or should I go back to my ob?