nothing you can do now. Too late for tamiflu. Just wait it out, drink hot fluids and take hot showers. Should get over it soon enough :/ Its rumored that u can get zombified if you have the flu
IF its really bad, then you can take OTC Symptom Relievers + Vitamin C. If your throat hurts, gargle with salt water, it increases the blood flow to that area which would increase the neutrophils, etc.. also in that area. Theraflu or Day Quill are good products. Oranges + Strawberries being the best natural source for vitamin C.
my flu remedy (no its not b'cause im mexican) chicken soup with 3 teaspoons of tabasco of your choice. is there tabasco in canada? if not, cayenne pepper works just fine. lower to 1.5 teaspoons and get ready for a clear head.