After doing a little more digging on my stomach issue I found this link
http://www.joyfullivingservices.com/hiatalhernia.html on Hiatal Hernia's
This is the first article I've read that really explains my symptoms in detail, especially the tightness in the middle chest and muscle spasms I've been getting. With no other explanations from all the tests, I am fairly certain this is what I have. The cool thing is there are very safe treatment options for it and I am going to try some of them out.