Mucous Retention Cyst. With that) ?

Doctor, I'm 15 years old. In last month, possibly 7-8 Feb, I noticed small swelling in my inner cheek. It was painful. Then I took Flucoxacillin 500 MG (three per day) for 6-7 days. After taking the medicine, there is no pain and discomfort and swelling also pretty reduced but not fully gone. For this, I consulted a doctor online and give him a photo of the area of swelling (I have also attached this photo on this query). He told me that it is Mucous Retention Cyst. He prescribed me (Loratadine), (Vitamin B Complex), (Vitamin C) for 15 days and told me that The medicine can wipe out the swelling. If it can't go away with medicine, It can be removed by surgery. But, as I have no symptoms and discomfort, there is no need for surgery at this moment. What should I do doctor? Is surgery needed (Note that I have no discomfort and problem with that)?