Persistent sore throat after taking Prevpac and it goes forever

I never smoke and drink but was found to have H. pylori in March, 2011, and the PCP gave me Prevpac for 14-day-treatment. After I taking the 12th dose, I felt sore throat. Since I was in vocation then, I continued to take the rest of medicine. Then, sore throat was terrible. I went to see the PCP and he just said it was because of allergic to something and put me on erythromycin. However, it did not work. Then, he referred to an ENT doctor. ENT doctor said there was nothing wrong with my throat and he said it should because of acid reflux although I have not experienced heartburn at that time. Then, he put me on delixant and raditine ( acid reducer) after 2 months, sore throat is still here and bother me too much and I had heartburn. So, I went to have an EGD and it suggested there was acid-induced inflammation in my food tube. Then, the doctor asked me to take 2 tablets of delixant per day. Then, less heartburn happens, but there is a sour smell in my mouth during midnight. I keep decreasing my diet and limit the types of fruits because of the persistent sore throat....

I do worry about my sore throat too much. Please help me to cure it soon!

A tons of thanks for your suggestions and medications!!!