Early 30s, 5'10'' 210. Sudden Pain in Middle Back. Never had before. Wasn't doing anything strenuous. In home, just finished washing dishes, bam! sudden middle back pain directly in middle... Extreme then, now still hurts 1- week later. Only thing I can think is that it coincided with a bug-bite I found on stomach 10 mins earlier, but that can't have anything to do with that, right?