Bactrim and serum sickness

Hello all,
I'm in the same boat but near the end.... I was given Bactrim for a UTI. I woke up after 2 days with horrible aches in my joints and muscles. I was immediately taken off the Bactrim and put on Doxycycline. I was then put on Prednisone for the aches (which helped). I developed blisters and a rash after a few days. My aches went away after about two weeks but now I have itchy, sore and peeling feet, buttocks, mouth, and genitals. Stomach upset as well. I have been tested for everything (STDs, Lyme Disease, West Nile, etc, etc) and everything has come back negative. I was diagnosed with Stevens-Johnson Syndrome from the allergic reaction I had to the Bactrim. It has been 3 weeks since the first dose and I am finally starting to feel better (except for the insane itching). Good luck to everyone. Never again!