SMZ-TMP DS and self medicate

About a month ago I was prescribed SMZ/TMP Double-STR Tab MPC for an infection after 3 other antibiotics failed. After a few days I noticed that every night I was having a sweaty fever and chills. I eventually stopped taking the medication for fear that it was a reaction caused by the sun. This past week I noticed signs of my infection returning. Since I had nearly a full prescription left over, I decided to self medicate for that evening with intentions of calling the doctor the next day. About an hour after taking the tablet I felt this burning/tingling almost like an itchy feeling all over my body. Then came severe abdominal cramping with diarrhea, vomiting, and even vaginal bleeding. I was unable to sleep and noticed my face and lips had swollen to a grotesque state by the early morning hours. It was the most horrifying and painful night of my life.