I have had a hoarse voice for a week and recently started coughing up a yellow thick mucus.  I went to a clinic yesterday and they did a rapid streptest  and said it was positive.  I have been on penicillin and clarithromycin for about 32 hours now but still no improvement in my voice.
Dear Friend. Hi, I am Chat Doctor, I have read your query in detail, I understand your concern. This can occur due to severe Laryngitis. Best treatment for this is Steam Inhalation and Warm Saline Gargles. Do them. Also, if you have only the problem oh hoarseness of Voice, also get your Thyroid Function tests. Review with reports. This is my personal opinion based on details available here.  If you still have any query you may please ask me. Stay Healthy. Chat Doctor, MD