Mastitis?

It started yesterday with a clogged duct on left breast which I can't seem to remove with pumping. Then evening time I developed a fever with chills. Took panadol and fever subsided but breast still pain. Today feel much better just low grade fever but it is now like generalised pain over one area of my left breast which feels painful to the slightest touch and feels hotter as well. I can't even carry my baby properly as it hurts when put her near my breast. There is a small area near nipple which is red but my breasts are soft and not rock hard. Is this mastitis and will it go away on its own? Do I need see a doc and which doc to go? GP?