Recently I sustained a knife wound to my arm, and was treated as a psych pt. The wound wasn't stitched, plus I was forced to have a urinary cath, for reasons I don't know, in the ER. Five days later I'm still bleeding, found out at the pharmacy that the cephalexin was prescribed for a UTI, which I'm very used to. Have a hx of two episodes of pyelonephritis, can't afford the antibiotic, and extremely upset about how I was treated in the ER. I have back pain, not feeling well, but when I had blood poisoning before all I remember is the UTI before I went into shock. Any chance my untreated wound is going to cause a repeat of blood poisoning?