You say you are on inhalers now? Those inhalers contain the exact thing your juice did pg its also in food and beverages we eat and drink. I seriously doubt that the vapping you did is the cause of your current problems. Even the flavorings are food grade. I think your stress is the culprit here and you are focused on the vapping because the symptoms happened to show up after you tried it. Nicotine in small doses has been said to be no more harmful than drinking beverages containing caffeine. You say your chest xray shows normal that should tell you right there your short vapping didn't do any damage. Be sure to follow up with your doctors too. I hope you get the help you need to get better.