Hi and welcome to HCM.
It sounds like stomach issue. All this is caused by high acid secretion. Hiatus hernia
can cause such difficulties and you should do gastroscopy to evaluate this. There also can be obstruction or stricture in esophagus
. Till you do it you should change your dietary habbits. Avoid alcohol,coffee,smoking
,fats and fast fodd. YOu should eat more milk and milk products, fruit and vegetables,boiled food and natural teas. 1 hour after meal you should not sit or lay. Also lay with elevated upper body. There are other medicines which can be prescribed, ask your gp about this.
Wish you good health.