It is possible that the discomfort in the right side of your throat is due to a pharyngitis or tonsillitis, which can be caused by a virus or bacteria, such as streptococcus. It is important to see a doctor for a proper diagnosis and treatment. They may recommend a strep test to determine the cause of the infection. In the meantime, you can try gargling with salt water and taking over-the-counter pain relievers like Tylenol or Advil to alleviate the pain. Be sure to check with your pharmacist to ensure these medications are safe for you to take.