My 2 year old has light colored foamy poop. it's not as thick as normal poop but not as thin as diarrhea either. she's threw up several hours before ?

Possible infection: Hi there! This is the time of year when many children get "gastroenteritis" which is an infection of the digestive tract. The key here is to make sure she is keeping well-hydrated, even if she isn't eating well. You can give water, 50/50 mix of gatorade/water, or pedialyte. If she develops lethargy, bloody diarrhea or persistent high fever, she needs to she her regular doctor right away.