Bactrim and outbreak

I recently had a breast reduction performed and developed a minor, natural infection due to the type of surgery, yet needed an antibiotic to help clear it up. My surgeon prescribed bactrim, and I was fine for the majority of the taking. About 2 doses away from finishing the meds, I noticed a rash on my stomach when I got out of the shower. The next day, I was covered completely head to toe in a giant rash that felt like severe sunburn, with 102 fever to accompany it. I have never felt so bad in my entire life, and on top of everything else, I'm graduating from college in 2 weeks and had 2 finals to take within those 2 days. It felt like someone let me soak in boiling water for an hour--severe sunburn minus the sticking--and I was FREEZING. Well anyway, I'm just getting over the itching now, it's been a few days. And now that I think back, I did have a headache for 3 days straight prior to the hive outbreak (but I just thought it was my allergies). My PCP told me I was allergic to sulfa drugs--NO MORE OF THEM!! But no resentment to my surgeon (he's amazing), because we had no idea that I was allergic to it in the first place

I had been taking bactrim for a week when one morning i woke up feeling achy, tired, and light-headed. I noticed a slight rash forming on my arms but didn't think much of it bc i had been on the Bactrim for a week already. Then the symptoms got wayyyyy worse. I started to form lesion like sores on my vagina, and I immediately saw a doctor to get tested for STD's. The gyno examined the area, and she said it did not look like herpes but that she would test for it just in case. She put me on augmentin bc she said I definitely had some sort of infection down there. After taking 4 doses of augmentin almost all the lesions went away. The STD tests (blood, culture, and urine) all came up negative, as I expected they would. Has anyone else had genital reactions to bactrim???? Because as of right now the doctors are unsure what caused this outbreak/infection.