Have'nt posted in a while. Had a sinus infection, treated with zith and it went away. 2 weeks later it came back, got 10 days of amoxicillan. Sinus cleared up in 3 days, bad anxiety and lightheadedness got worse each 500mg dose, so I figured it was a reaction to the abx not a herx. Stopped after the 8th day. That was a week ago, I've gotten worse each day. Had IV abx 2 years ago and figured I was good. I can't work now so back to the doctor tomorrow. Anyone relapse this way? I sure hope it's something else, anything.