I had a fever with a sore throat. For a while I was getting better, but my sore throat came back. I went to the doctor a week ago. She said it would be gone in 3 days. Well, it's been over a week, and my throat is still sore. No fever this time, the only thing wrong is my throat. It hurts really bad when I swallow. I'm wondering if I could have somehow got a second infection or something? Should I just go to the doctor again?