-Hi and welcome to HCM. Thank you for your querry.
It sounds like stomach issue. All this is caused by high acid secretion which is found in gastritis
, GERD or hiatus hernia
.Stomach and esophageal cancer is very rare at your age.
Symptoms are aggravated after meal, long sitting, leaning forward, stress and anxiety
. In the beginning this is treated by changing dietary habits.
You should avoid alcohol, coffee, smoking, fats and fast food, carbonated drinks and eat more milk and milk products, fruit and vegetables, boiled food and natural beverages and teas. 1 hour after meal you should not sit or lay. Also lay with elevated upper body. If you are overweight
you should do often exercise.
Secondly, there are antiacid medicines which are usually helpful,you should consult your GP about this. If symptoms persist,you should do gastroscopy and stomach biopsy to verify is there helicobacter pylori infection
which can be treated then.
Hope I have answered your query.