The good news is it appears that your medical doctors, provided they did a good job of diagnosis, didn't find anything seriously wrong with you. Of course, no one who is chronically ill really appreciates that report of findings because the bad news is, your body is not working right and the underlying cause couldn't be discovered.

You mentioned you have taken a lot of Antibiotics . I would recommend you read the book: The Yeast Connection. Candida can form in the digestive tract after prolonged use of Antibiotics and cause excessive gas and bloating. This could cause a hiatal hernia or the feeling of having one.

Hiatal hernias are being diagnosed better these days with ultrasound, provided you find a diagnostician who is skilled in this area. If you have one, the manual manipulation of snapping the abdomen down usually helps relieve the symptoms for a number of days. You might want to read up on ginger, too.

The heart pounding certainly can occur from digestive problems. There is also a relationship with injuries to the cervical spine. If you had a whiplash injury prior to that problem, I wouldn't be surprised. Dr. Ruth Jackson uncovered some of the earliest findings of cervical nerve irritation and changes in normal heart rhythm. It's not just the Vegas nerve that is associated with the C2 vertebra, either. The lower cervical spine can be the culprit.

The Vegas nerve controls the parasympathetic supply to most of the digestive system; so, another possibility is a pyloric spasm or malfunctioning ilio-cecal valve. A pyloric spasm I would think would cause a lot of dull pain in the pit of the stomach but the ilio-cecal valve, which is close to the appendix, can refer dull pain in the same area. Even an early appendicitis condition will often refer to that hypochondriac region. No wonder specific gastrointestinal disorders are so difficult to pin down.

I don't know about the heavy metal component. I suspect with a lot of people, it is a sensitivity issue because some people can have a mouth full of dental fillings and not exhibit symptoms associated with heavy metal poisoning at all. I suspect that dentists must inhale the actual mercury vapor when they drill out fillings but they usually have pretty steady hands and I don't think that would be the case if the exposure to the mecury vapor was all that great but again, I'm no expert in this particular field of toxicology. I do know that medically there are some places that treat suspected heavy metal poisoning with intravenous chelation therapy. Except for evere cases of posioning, I don't think that lab tests are all that easy to do for heavy metal toxicity.

I suspect the smartest diagnostician on the job is your own body. If you give it a lot of supportive care, it will do the best job it can at righting itself. Good nutrition, massage therapy, adjustments if you have subluxation, energy work, like acupuncture, etc., all help the body help itself.

Finding out what the body needs and needs to be without is also necessary. Some people don't digest milk properly because they are lactose intolerant. Some people don't do well with wheat, which can cause ciliac sprue. Reducing anything that irritates the body allows it to rest itself and repair. Rest also helps the heart rhythm. I'll bet you have noticed when you are over tired the heart pounds harder or more irregularly at night.

Finally a number of organ responses can cause emotional changes. Angry dunks have liver stress, people with irritable bowel syndrome often feel depressed, and people with heart irregularities often report feeling anxious.

Well I hope if you return you find some of the references worth investigating and always be sure you discuss what you read online with your primary health care provider. I wish you well with your journey to find what works best for you.