This all started about a week ago, one night, as I was sitting in bed, I started having trouble breathing (I wasn't choking, just, really out of breath). There was no good explanation as to why I suddenly felt like I wasn't getting enough oxygen and had to work harder to keep breathing.
I wasn't anxious at all. I actually was pretty calm. I felt like my throat/ear canals were swollen. I went to bed after getting a glass of water. I woke up fine the next morning, headed to work, sat at my desk and the first thing I remember was noticing the temperature of the room was a bit too hot and it was making my breathing uneasy again. It then gradually got worse over the course of an hour, but there was no wheezing or crackling, mostly a light cough and difficulty breathing.
It got so bad that I asked someone to drive me to the ER, suspecting I may have ingested nuts (to which I am deeply allergic to). However, I did not get any rash (I always do when I eat something I'm allergic to), nor did any swelling of the lips/face occur (and after double-checking, there weren't any nuts in what I ate that morning).
My vitals when I first got to the ER were a blood pressure of 100/53, with a pulse at 100 (I had been resting). Suspecting an eventual allergy, they gave me prednisone. After 2 hours my breathing was partially restored, still with a low BP and a high pulse, but then after 4 hours resting, my BP climbed up to 135/77, and I was breathing just fine.
Now, my problem is I still get that very uneasy feeling of not being able to breathe right. It's not as severe as it was that day but it's still enough to start to bother me. When it happens, any kind of light exercise will leave me completely out of breath (which ain't the case otherwise, even for more strenuous exercise).
It's been about a week and it just keeps happening over and over again, so I'm starting to wonder if anything is wrong. Has anyone else ever experienced something similar? I'm not 100% sure but I think it gets much worse when I eat, which made me suspect GERD, but I wonder if GERD or acid reflux can cause you to not breathe well like this?
Any input would be greatly appreciated.