<s>[INST] I've been having trouble with bloody diarrhea for about a week now, and stomach cramping, nausea, and exhaustion for about 3 weeks.  I've also been having 2-3 periods/month.  I went to the ER on Saturday after a bad bought of bloody diarrhea because it worried me, was given Cipro and Levsin, no blood in stools until today, after a run.  What questions should I ask my doctor when I go in this afternoon? [/INST] you need to do stool analysis to see the exact pathogen which is causing this. most commonly this is shigella or e. coli and you need t0o do antibiogram to see approprate natibiotic for it. Regards </s>