My four year old has been complaing of a tummy ache for approx 3 days, she has also had multiple soft,clumpy light yellow stools(3-4 per day) it does not really have an odor. Should I be concerned, we have been adjusting her diet to include less junk food.
As you said his diet has to be modified (less junk food), the pain in abdomen can from gastritis which is due to spicy and oily junk food or can be mild viral infection. There is 3-4 yellowish stool not foul smelling, not watery, so, all you need is to just observe these things (watery secretion, increase in frequency, foul smell, appearance of fever, persisting symptoms, irritability of child). For now give sanitizing and antacid for gastritis it, pain will resolve in next 48 hours hopefully, if not or increases anytime and above symptoms appears please get the child checked.