I am a 65 yr. old female. have had a chronic cough with phlegm, some wheezing when I exhale Thishas been going on for about 3 weeks. I have Hashimoto Thyroid with goiter, take Armour 30 mg. daily. Have allergies to dustmites, pollens. Just now I got into a cought "fit" and had a very strong metallic aftertaste..something new with this! I take Claitan D daily, and last night, 2 benedryl. What can do tonight to calm this down? I have access to antibiotics, but have not taken any.