What Causes Feeling Of Swollen Brain And Headache?

Hi I am 25 year old Female. I have always been concerned about my headache but Since past two days i been having severe headache, which makes it hard for me to walk or lay down. When i get up i get sharp pain in back of my head and and eyes. I feel as if my brain is swollen. I also have strep throat. Last night, i also experienced excessive sweats.