I had campylobacter (food poisoning) 2 months ago and had to have a weeks course of antibiotics (Erythromycin). The diarrhea eventually stopped but i have gradually got worse with left back pain/ache (feels like a golf ball sticking in my back ribs), sweating, feeling clammy, muscle spasms etc. I went to Drs yesterday and she tested my urine and there were traces of blood in it so she sent it to be tested and took my bloods for kidney function. I am worried the campylobacter has damaged my kidneys or something with already having a weakened immune system. An ideas?