I had a sudden fever, body aches, runny nose, sore, throat, and cough yesterday. Is this a cold or the flu. Two weeks ago I had strep throat.?

Possible flu. Please get tested with a nasal swab for influenza. You have to take Tamiflu within 48 hours of onset for it to be effective.
Probably a virus. It is not yet flu season (no reported cases yet), so you symptoms are most likely viral. I would recommend ibuprofen or acetaminophen for the pain and fever. Most cases of strep throat respond to the initial course of antibiotics. However, if the sore throat does not improve in 3 days or the fever lasts longer than 5 days, you should see your doctor.