A few weeks ago, my voice became very hoarse and my throat was really sore. They believed it was a sinus infection, and gave me bactrim (I believe). However, 3 weeks later- my voice is still very hoarse and whenever I tilt my head to the right, especially when swallowing, I have excrutiating pain in the right-side of my throat. I've also noticed small red bumps on the back of my throat, but the nurse said those were nothing. What should I do? What is this?