Thanks for posting on HCM,
Pain around the epigastric region/retrosternal pain
could not just be as a result of acid reflux or PUD and you should now consider the possibility of consulting a gastroenterologist. From your description if you are suffering from constipation
and epigastric pain
, then GERD or acid reflux is likely and your medications may be inappropriately taken or not rightfully indicated. If you are only on antacids then you might require combination with a protein pump inhibitor to treat the acid reflux. Reason why you might be experiencing this only at night after dinner is because of the nature of your dinner which helps encourage the secretion of gastric acid
into the stomach and hence the pain (plus the fact that you lie flat when sleeping).
Other possibilities based on your description are bile disorder, pancreatitis
, coronary artery diseases (less likely).
Hope this helps