I HVE BEEN SICK FOR A COUPLE OF MONTHS, WITH

I hVE BEEN SICK FOR A COUPLE OF MONTHS, WITH SINUS INFECTION AND DIARRHEA. I HAVE TAKEN 3 DIFFERENT ANTIBIOTICS FOR THE SINUS INFECTION. bUT THEY GO RIGHT THROUGH ME, SO I STILL HAVE THE SINUS PROBLEM, BUT NOW I HAVE GONE FROM SOME DIARRHEA TO DIARRHEA ALL THE TIME, SO I CAN'T TAKE ANYTHING BY MOUTH, NOT EVEN SODA CRACKERS. I AM SUPPOSED TO HAVE A COLONOSCOPY NEXT WEEK, BUT I'M AFRAID I HAVE AN ABDOMINAL INFECTION. MY COLON SURGEON IS ON VACATION (I HAD COLON CANCER IN 2011 AND SO FAR AM CANCER FREE I THINK.) ALSO AM SCHEDULED FOR RETINAL SURGERY FOR A MACULAR HOLE IN MY LEFT EYE 2 WEEKS AFTER THE COLONOSCOPY. I WANT TO KNOW IF MY SYMPTOMS ARE SEVERE ENOUGH TO CANCEL THE COLONOSCOPY?
LORR