My 5 year old has a rash on her chest and belly (past few days) that is red, scabby and itchy, its starting to slowly spread. So I gave her an oatmeal bath today. She was in there for 15 minutes and wanted to get out, she started looking flushed. I was drying her off and she said she didn't feel good and needed to lay down and imediately she started vomiting everywhere and passed out into my arms. I carried her away from the mess and laid her down. I took her temperature and it was 100 F, I took it 15 minutes later and no change. She fell asleep and 40 minutes later I checked her temp again and it was only 96 F. I put extra layers on her and she took a sip of water and fell asleep again. What should I do? Should I take her to the children's ER or just take her to her doctor tomorrow?