What is possible cause to chronic yello w diarrhea every morning followed by vomiting with nausea during bowel movement only with yellow too. no pain.?

Many causes: Persistient diarrhea with or without vomiting has a variety of causes. See your doctor for a detailed evaluation. Don't forget to mention if you have been traveling internationally in the last few months.

Liver: You might have liver or gallbladder problems, it also may be a GI problem, see a doctor , they will talk to you, examine you, maybe so some testing, that way they will be able to find out what is going on.