thanks for choosing HealthcareMagic.This symptoms point towards some fever
.May be a stomach infection
.See when ever fever comes to have low appetite is common.Take plenty of fluids like juice,soups,lemon water etc,have light diet.Take acetaminophen
for fever and some anti colic
for stomach problem.Take this even if you do not have fever.Rest a while you should be fine.If not see your family doctor.