My 4 N Half Year Old Daughter Has Got Tummy

My 4 n half year old daughter has got tummy ache since 6 days .after she eats any food she says she got tummy ache n she goes to the toilet for poo n does poo but her poo looks fine .everytime after she had any food she says she has tummy ache n she runs to the toilet n does poo .she repeats that for 3,4 times in a day and after she passes stool she is fine n starts playing again n eating but again after she eat any food she says she got tummy ache n goes toilet for poo.