Flu symptoms started 3days ago with a fever of 100.5 and achy body and headache and eyes hurting. Better now by skin still sensitive on back and torso?

Plenty of fluids. The flu is a very uncomfortable and sometimes dangerous condition. Good that you are getting better. Drink fluids, and get rest. I expect that you will be back to normal soon. Make sure you get yearly flu shots, as new flu strains appear from year to year.