Anyone have any experience with Mastitis?

Terrie
I'm having pain in my lower right breast.  It started last night & the skin there is now red & swollen and vey tender to the touch.  Tonight I have a fever, chills & slight body ache but no other symptoms of a cold or flu.  I had clogged ducts with my first pregnancy but this feels different.   I read online that the most likely cause is Mastitis which won't affect the baby if I continue to nurse.  However I'm terrified to go near him in case I am getting sick.  He's only 3 weeks old & he was born 1 month premature.  We live in a small town so all the docs are closed til Monday except for the ER so I can't get in to see anyone to help ease my mind.  Anyone been through this & have any insight?