Try a different diet I wrote about how I started feeling like this I'm not even joking any other juice I drink makes me yawn food that are hard to chew makes me yawn junk food toothe only relief I've gotten so far is eating eggs and toast for breakfast and mangoes. and dinner I have rice and fish wild caught and I only use onions, leef, and ionized salt after that if I'm hungry later on eat a gluten free toast with butter and I drink oat milk. And I've been on this diet for a month and my yawning felt better I only yawn three times after my second meal and if I dare to eat at a restaurant or other food I it makes me short of breath and I start having the yawning issue my mouth stays open the whole time and the yawn won't come out last 20 minutes its really bad. I think being exposed to something toxic really messed me up and Idk what to do now I'm allergic to everything now