For The Past Week I've Had A Slightly Painful Sore

For the past week I've had a slightly painful sore throat whenever I ate or drank certain drinks like orange juice or fruit smoothies. I've had no cold/flu symptoms at all. It feels almost like there is a cut in my throat that is irritated when I eat. I've been using robbotussin, throat lozenges, and salt water gargles to relieve pain with only a little success. Is there anything else I can do?