My son has been fussy for the past week a long with a on and off fever for the past two weeks took him to the emergency…

My son has been fussy for the past week a long with a on and off fever for the past two weeks took him to the emergency room Thursday night and they told me he might just have a virus to just give him ibuprofen or Tylenol but last night i notice a bunch of red dots all over the back , chest and stomach and the fussiness hasn’t stop idk what to do :( my mom thinks he might have an upset stomach