Have had a fever over 100 for 5 days and now my throat is starting to hurt. Now I have white spots on my tonsils and blister things back of throat?

See a doctor ASAP! Your symptoms suggest a few possibilities. It's possible you have a simple viral infection (like a cold), you should be checked for streptococcal pharyngitis (strep throat) and infectious mononucleosis (mono). Strep can lead to scarlet fever or rheumatic fever (very dangerous) if not treated soon. Mono can lead to liver problems, spleen enlargement and even spleen rupture. Please get checked asap!