To teach you a simple and effective way, you can take Niuhuang Jiedu tablets of Tongrentang, 3 ~ 4 times a day, 2 tablets each time, usually only 3 ~ 5 days to relieve inflammation and sore throat.
Niuhuang Jiedu tablet has a good effect on tonsillitis and sore throat, and it doesn't have as many side effects as antibiotics. It is also sold in general pharmacies. You may wish to try it, and it is best to use Tongrentang's.
If the sore throat continues to worsen and fever symptoms appear, it is suggested that you should go to a regular hospital in time to avoid developing into tonsil suppuration or pneumonia.
Try it first. After the above method works, it's not too late to come back and choose the best answer. :)