Mastitis help

I’m 8 weeks into EBF my first and I think I have mastitis. Last night during a night feeding, I noticed parts of my left boob were very sore and tender. Yesterday afternoon I started feeling really run down and had a low fever.

I took Tylenol then and was ok but woke for the night feeding now and feel like total garbage! I also noticed my boob is slightly red where it’s still sore.

Do I need to see a doctor or get antibiotics for this or will it run it’s course on it’s own if I let it? If I do need to see a doc, do I see my Physician, my OB, or a lactation consultant? Also I’m still ok to nurse my LO right?