Hello, My Name Is Brisa. My Almost 2 Year Old

Hello, my name is Brisa. My almost 2 year old child has had diarrhea and diapper rash for going on two weeks. His Dr. is on vacation until the 28th of April. I took my baby to urgent care, for the rash he was given Triamcinol and Nystatatin, for diarrhea Kao-Tin and an antibitic. The rash returned after 6 days and diarrhea never went away. My baby is in pain. How do I help him? THANK YOU