I have severe sore throat, swollen, with white patches for four days now, not resolving.Throat burns and is very painful to swallow, but no fever. Had same symptoms 3months ago. Was given Rocephin, IM, and symptoms resolved. At that time Strep screen was Neg. I have a mitral valve prolapse, and I don't want to wait too long just in case it is a bacterial infection. Could this still be a bacterial infection with no fever?