It seems that you are having acute follicular tonsillitis
giving this problem.
Due to congestion on tonsils there are red dark lines.
Due to infection there might be enlarge lymph
node giving pain in neck and right jaw.
You may require one antibiotic and anti-inflammatory medicines course.Consult ENT specialist
and get examined.
Avoid fried, junk food and cold drinks.
Do salt water or Listerine
Okand take care.