I have had a wet cough for over a month now. This has been accompanied by (what I thought was) oral thrush. I had been taking antibiotics for acne before the white-coated tongue started; they were capsules and I opened them and took them in powder form for around a week. Once I started getting symptoms of oral thrush, I assumed it was from the antibiotic and took 3 or 4 rounds of fluconazole. This helped a bit, but the white was still there. I proceeded to take Nystatin oral suspension for a week and a half, 4 times a day. This didn t completely solve my problem. My doctor told me to start gargling hydrogen peroxide and water; I did this for a few days. 2 days ago, I gargled without water and just the concentrated dose of hydrogen peroxide. Today my papillae are extremely swollen and I have a horrible metallic taste in my mouth. Food also tastes more diluted. I also started taking nasal spray for the cough, which is still heavily-rooted in my chest. I am nervous that it could be strep - I am very prone to it. I had a case last year which actually turned into scarlet fever because I had no symptoms until I broke out in a rash that covered my entire body. My main concern right now is my tongue.