Hey, I had the very same problem a few months back. I went to the doctors and they prescribed me amoxillin, which helped with the swollen throat and aches. I also took ibuprofen to kill the head pains.
You could have tonsillitis, which is what I had. Or a different kind of throat infection. I recommend you see your GP as soon as possible. The symptoms will go after a while, but if you have medication, they will speed up the process.
Hope that helped!