Thank you for writing.
You will need to return to your doctor again.
Antibiotics are used for bacterial infections - if your issue is due to a virus, they won't work.
A virus in the body can cause swelling in the glands around the neck and throat - a blood test can let you know if you have a virus and what kind.
You also may have severe tonsillitis that is caused by a virus - this can take a couple of weeks to heal.
I hope you feel better soon - throat pain and discomfort is very distressing.