You probably have tonsilituis ( didn't spell that right), but you should go get checked you probably need antibotics. You could try Garlic pills, but your best bet is a real doctor. I am sorry that you going through this I will be praying for you.
You probably have Strep throat. it won't go away without antibiotics.
You have Tonsilitis or Strep Throat ... You would need antibiotics to kick out all infection.... Go to The Doctor as soon as possible
The white stuff is called "Pus" ....... the headaches and fever come with the infection.....Also gargle with Salt water...... but yes you need a course of antibiotics (Penicilin) - don't know how to spell it lol
It could also be a throat infection.....you'll still need antibiotics tho. I get them once a year