Nobody knows why I am having these symptoms.

Oh dear, this sounds very difficult for you. I'm not a doctor, but based on what your wrote, I think you need to be seen again -- in person -- perhaps by a new doctor. I'm a big advocate for getting second and even third opinions, if need be. Something is going on with you, and your quest (and yes, it will take time and effort) is to get to the bottom of it. It's disappointing when this doesn't happen on the first round of doctors visits, but medical experts can be stymied. Start by asking your regular doctors for suggestions of who you can see for a second opinion. If this makes you feel uncomfortable, ask friends, relatives, anyone you can for the names of doctors they like. It does sound like a possible allergic reaction, and who knows, maybe it is a worsening of your allergies, but you need a professional medical opinion. Which will hopefully bring the relief of treatment. Press on. And by the way, please don't put off getting emergency treatment if things worsen. Good luck.