Severe chest pain - pressure feeling on left side along with pain in the neck on left side. I have already been to the ER this past Tuesday - sd I had a UTI (never had symptoms) which got into my blood and traveled to my kidney - so I am being treated for both a lung and kidney infection since Tuesday on an antibiotic for 13 days, along with steroids and strong pain meds. The chest pain is still there and it hurts really bad. My doc isn't open today. What would you suggest I do?