I've been feeling this needle-like pain in my left chest that started a couple of nights ago while I was asleep and it lasted about 10 minutes. Afterward, I started getting these intermittent pin-pricking pains on both sides of my chest. Now I'm even feeling some discomfort in my back and mild pains in my left shoulder and arms, which sometimes shift to the right side. Im already dealing with a breathing problem and recently noticed some chest tightness. I dont feel tired or dizzy, but I do have a stomach ulcer. I'm really worried this could be some kind of heart attack or angina. What should I do?

Neurologist opinion.