Bactrim DS and fever

UNTIL READING DIFFERENT REACTIONS TO BACTRIM, I THOUGHT THAT I MAY POSSIBLY HAVE A BRAIN TUMOR. I STARTED BACTRIM FOR POSSIBLE STAPH INFECTION AFTER HAVING POISON IVY AND SOME SPIDER BITES. AFTER TWO DAYS ON BACTRIM, I DEVELOPED A LOW FEVER AND HAD DIFFICULTY SLEEPING ALSO HEADACHE. I STOPPED TAKING IT ABOUT HALFWAY THROUGH MY PRESCRIPTION AND DEVELOPED DOUBLE VISION FOR THE NEXT SIX DAYS OFF AND ON. THE WORST TWO DAYS FOR ABOUT FOUR HOURS STRAIGHT. I SAW A OPHTHALMOLOGIST WHO COULD FIND NOTHING WRONG WITH MY EYES AND SUGGESTED THAT MANY THINGS COULD CAUSE IT FROM MEDS TO A BRAIN TUMOR. I FEEL BETTER AFTER READING OTHER ADVERSE REACTIONS. I ALSO DEVELOPED HIVES ON BOTH THIGHS. NASTY MED.

Ive been takine it for about 2 weeks, up untill yesterday that is. the first few days taking it i had no problem, but then i started getting really bad headache's, blurred vision, nausea, and tension in my neck. then yesterday i woke up with a small rash on my chest. As the day went on the rash started spreding buy the end of the day i had a major headace, fever, and i was covered in a rash from my neck to me knees. i went stright to the doctors an he said i was having a major reaction the the drug and to stop taking it. hopefully this rash and headaces will be gone with in a few days.