I Have Recenlty Been Having Symptoms Which I Thought May

I have recenlty been having symptoms which I thought may be just the common flu b/c I was getting body aches and the chills & sweats uncontrolably. I have had those symptoms for the past few days but now Im starting to get hives all over my body and which are painful breaking out all over my body sparatically. Ive taken benadryl and some other antibiotics prescribed to me about a week ago for an absist that I had and that seemed to go down but now these symtoms in the past few days have flared up. What do you think that it can be?