I have heart burn and always feels like my food is stuck and won't go down, what can it be ?

Dysphagia: Dysphagia, or the feeling of difficulty for food to pass through the esophagus, is a symptom that must be evaluated when it occurs, particularly for someone in their 70s. It may be due to something as simple as Gerd which is not under control, but other causes, even including esophageal cancer, are possible in this setting. You should see a gastroenterologist right away. Good luck.