Hi — I’m glad you have come through the surgery and are on the way to better health.
One of the potential side effects of the thyroidectomy, though, is damage to the nerve that runs to the vocal cords (and not necessarily damage to the cords themselves). Whether that has happened to you, or not, is something your doctor can weigh in on. Asking a doctor you trust about the issue might give you information about how to cope with it so that you don’t make things worse while your throat is healing.