I hope everything is ok, my friend. Same thing happened to me years ago. I was dating a nurse at the time, so I was dragged to ER. Thankfully, everything was fine physically. No heart problems or allergic reactions. My problem was anxiety. I had it my entire life, but I was in denial because I was always able to suppress it...until I couldn't anymore. That was a life-changing diagnosis, and the quality of my life is so much better now!Nearly couldn't breath.
My advice to all men out there: If you ever have breathing issues or chest pains, go the ER and check your ticker. If your ticker is ticking fine, then test for food allergies. Then, look inward and check your wrinkly gray meat computer. A simple mental reset was all I needed, thankfully.