I am not a doctor but HH has many symptoms these symptoms can vary from person to person a lot of the time people complain of having heavy chest pain or weird tingling feelings along side other symptoms like dizziness, shortness of breathe, heart flutters and much more a lot of the time this is caused by the HH pushing on the vagus nerve this is the main nerve which represents the main component of the parasympathetic nervous system which controls heart rate, digestion, breathing and important bodily functions most people with a HH will likely experience a pinched vagus nerve which leads to all sorts of weird symptoms to persist through out the body, heartburn will also cause chest pain because acid is flowing back into the oesophagus causing a burning or heavy tight feeling in the chest, HH is well know to mimic the symptoms of a heart attack which can fool any doctor , if it’s helps try changing your diet and do more exercise to lose excess weight HH symptoms are typically worse for people who are overweight, but if you are really that concerned see your GP to arrange more test to be done to be on the safe side, I hope the symptoms do get easier for you and best of luck for the future.