Do I take my son to the ER?

I’m pretty sure I have COVID-19. My symptoms are loss of taste, smell, sore throat and stuffy nose. My 3 week old baby woke up with a 99.5 fever last night and I’m so worried. My parter isn’t here with me, because he said, “he knew he had it,” so he quarantined himself from us..... I’m here with my 3 week old & toddler. What do I do?? 😫😭