I ve done a lot of yardwork the past two weeks. I have multiple bug bites and developed a rash not near the bug bites, also some hives. Pt first said it s a poison of some sort and put me on prednisone. The strange thing is the last few days I get very achy in my hips/lower back, a fever, a headache and just feel sick. Then after a few hours, I feel normal again, a few hours later it s all back.