Hi doc, my baby is experiencing a mushy stool, she poop twice a day and yesterday she vomit thrice. Her stool exam result is rbc 0-2 hpf and 1-3 wbc?

Normal range. The baby maybe experiencing a mild gastroenteritis, but also very possible she is just spitting a little more than usual. An age would make thia a little easier to figure out with more clinical information.