My daughter vomited on Tuesday morning the 25th of September. She did it three times and stopped. It was a yellow non-odor vomit. Today, Thursday the 27th she started this morning at 5 a.m. This time it is foamy and still yellow with no odor. She will not drink, she has no fever and no diarrhea . She suffered from acid reflux in her first year, and she is 2 now. I am worried the reflux may be back or she may have pyloric stenosis . Her pediatrician said that she could develop the stenosis in rare cases. For some reason it is only happening if she lays down, sits down, and drinks.