5. Acid Reflux
Acid reflux is caused by food and stomach acid traveling back up the esophagus through the oesophageal sphincter. This is normally prevented by various factors, but there are a few weaknesses that can cause it to become more likely.
In this case, you might find that pressure from your hernia is making less room for your stomach and thereby causing food to sit closer to the top of the stomach by the sphincter. This causes it to travel back up more easily, and to thereby enter your throat and chest causing a severe burning sensation.
There are many other potential causes for chest pain, so it’s important that you always report this to your doctor. If it is reflux caused by a hernia or anything else, then you can try using an antacid such as Gaviscon to address the pain.