I feel I don't know enough about the other physical issues to give advice, but I would like to add panic attacks don't just last minutes. Many people struggle with ones that last hours and some of mine will cause pain in my chest that lasts for days and fatigue that lasts just as long if not longer. I'm not saying that what you are having is a panic attack, but panic attacks vary a lot from person to person, thus making them hard to rule out.

I hope the doctors figure out what is wrong soon though

Hang in there