Should I Be Worried After My Toddler Stepped On My Infant’s Tummy?

Hi my 3 years old shes 13 kgs in weight stepped on my almost 7 weeks newborns tummy. He cried for a few seconds and all seems normal I checked for any bruises and the color of stool all looks normal. It has been 3 hours. What should I do?? Should I be worried??