Woke up in the middle of the night to this

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Swollen left breast, body ache, fever 101.0 and chill. At this point I don’t know if I’m crying because of pain or frustration. It hurts my breast to do anything with my left arm and my baby has been fuzzy tonight so we haven’t gotten any sleep . Does this sound like mastitis ? My doctor doesn’t work tomorrow. Should I go to the ER? Or is there anything I can do at home to make it better ? I don’t want to be too close to the baby because of my fever 😭😭😭 I breastfeed and recently started doing formula as well.