There are options between pushing 911 and just continuing. First is to educate yourself on the early symptoms of the most common ailments and then listen to your body. Also educate yourself on symptoms of mental conditions. Anxiety can mimic heart problems, OR actually be caused by heart problems. Repressed fear creates some strange symptoms. To complicate things, even after you hit the 911, there will be some time before rescue reaches you. Honestly, if you are having an acute heart attack they are not going to get to you in time. If something is mildly suspect, you could also turn around and go back or head to a nearby trailhead (if that trailhead has communication services or people there). As you are retreating you can evaluate the situation and may still have to push the 911, but maybe not. Get out and get checked out be a doctor even if the symptoms go into remission. Retreat is a hard decision to make.
Gotta be really careful with any pain or discomfort involving chest or even upper abdomen. As I've often been told in EMS training, you can't rule out a cardiac event in a male over 30 (yes, that was last year's recommendation -- cocaine use has lowered the age for concern...) years old.It's absolutely true that a bunch of things, anxiety high among them, can imitate heart conditions, but you don't know... . You can't diagnose in the field, it takes blood tests and an EKG. (I'll add, that you can't diagnose most anything serious in the field without some advanced gizmos). In almost all cases, they're flown out.
When someone -- especially a male over 40 -- says to me they've got mild chest pain or abdominal pain, they're most likely outta there. I can call it in to a base hospital, but the decision is almost always to fly them out. I wouldn't recommend hiking out to "evaluate" when more stress on the heart could make it could go very, very badly. The few cases I've seen that might be called "acute" have also turned out well -- serious and almost unquestionably cardiac-related pain have all gotten out in time for definitive treatment and a good outcome. The reason for that is the people reported it quickly enough so we could get them out.
Which is all to say I disagree with the above. On the whole, when people complain about assorted symptoms, they're pretty genuine -- rarely someone trying to get a free ride out; they're authentically concerned about something. It's hard not to get into a 2nd guessing yourself loop -- whatever the symptoms -- but I'm a major fan of getting help. The SPOT and related gizmos have become a pain sometimes, but not in the case of medical issues.
George