I don't know if green beans or broccoli are good for a tummy ache or not but Roxie loves them. If your baby is eating grass that's a good sign of a tummy issue. I think they usually eat it to help with digestive stuff...like grass is fibrous. I know this morning Roxie threw up a ball of mucous grass. Awww the joys of summer! If your puppy keeps whimpering I'd confer with your vet, they'd have the best solution for you. Maybe someone else on here has more suggestions. I hope your baby feels better quickly!