Mastitis 😭

Sara • 7.2.16 👶☀️ • 9.16.18 👼⛈️ • 8.26.19 👶🌈
Made it all the way to almost 10 months but for some reason my daughter hasn't been nursing well on one side leaving me with milk blisters, now that side is red and tender, I can't get warm and I have a small fever of 100 -something. Have any of you had this and if so, anything I can do? I know antibiotics are needed but it's Friday night so my OBGYN and PCP are closed until Monday.. can I hold off or do I need to go to urgent care and get antibiotics asap? Any advice about this?