I'm not certain what your basis for measurement of the dilation of vessels in your hands or feet would be, but this is more often a misperception than not for many patients with similar complaints. Most of what patients discern as a change to the vessels is, more accurately, a change in water retention which collects at the extremities and makes vessels harder to see and therefore, appear less noticable or "smaller."

Feeling your heart beat is a common complaint of many patients with anxiety disorder and is more commonly referred to as "pounding heart." It is not a symptom of disease, but rather a response by the nervous system to anxiety. This would also explain the rise in blood pressure, since the stressors associated with anxiety cause vasoconstriction, a syndrome known as "stress hypertension." This also causes blood circulation to become more focused at the core rather than extremeties and is associated with the "fight or flight" mechanism inherent in all animals and humans alike. Sweating, again, is also associated with changes to the status of the nervous system.  

Protonix does not affect blood pressure.  Foods do not generally cause this type of response, although many patients incorrectly presume them to be a causal factor due to a temporal relationship ( in other words, eating something and feeling the associated symptoms soon afterwards and believing them to be directly related).

I'm uncertain why you would anticipate liver problems to be associated here. Vagal tone certainly plays a role relative to the status of the nervous system, but does not function alone to cause your symptoms. During stress, the adrenal glands release excess epinephrine, which can increase sweating, cause tremulousness in the hands, increase BP, heart rate, etc. and alternating tension and lethargy, muscle spasms or musculoskeletal pain.

I would undergo the normal tests for a fellow your age, PSA value and simple screen for colon cancer, general labs, chest x-ray. If these all look to be normal, then possibly like your physician, I would chalk it up to anxiety disorder. These symptoms can be quite dramatic in some cases and many patients become convinced that it represents serious illness going unchecked or undiagnosed.

Also, if your doctor checks your BP and it remains elevated, then I recommend that you continue the medication.

Best regards and Good Health