Talk to General Physician on Stomach Feels Heavy Weight As There Are Stones Instead Of Stomach

Aslam o alaikum. My mother is 45+ she started complaining that shev is having some stomach problem she describes it as she is feeling her stomach haveing stones/heavy weight morever she says whnever she eats something her stomach feels immnsely heavy as weight of stones & gas we have visited some doctors but prescribed medicien's ain't working .Kindly suggest what it could be so we can take some essential steps or which doctor in lahore is proficient & can understand the issue as we have been visiting doctors