Slight squeeze-upper center chest

Iv had a hiatus hernia for years now, but at 58 when I get chest pain I go and get checked out. The other day I went in and had 3 EKG's and 2 triponine blood tests done within 10 hours and everything looked good...I also had a stress echo 4 years ago, and my cardiologist said my heart it solid...I must have aggravated the hernia in the last few weeks because its been acting up for 2 weeks now, severe burping, nausia, gas and so on...Today after walking 3 miles or so and burping the whole way I had some kind of spasm in my upper center chest ... like a slight brief squeezing, and then it just went away, no pain, no other symptoms...I have had this a half a dozen times over the years and once I was even waring a haltop monitor at the time...Anyone else ever get this kind of symptom?

Had a work up done at the ER, and the doctor said it wasent my heart, and my cardiologist felt confident my heart looks fine ...Esophageal spasms possibly...