Worried about colon cancer? Report said.

I have been having these pain which is sharp and comes and goes from the last 15 days now in my left side of the abdomen. I did my urine test and it had presence of 3-5 hpf pus cells and calcium oxalate and hence I decided to get an ultrasound after consulting an urologist. The report however stated that the visualised large bowel loops show significant circumferential mucous edematous change which are features of acute colitis change. On seeing the report my urologist referred me to a gastroenterologist who gave me medicines for gastritis and wait for 10 days and said not colitis since I neither have diarrhea nor blood in stool. But I feel mildly constipated since last few days and then in checked my symptoms in Google and lost my mind when I found colon cancer also has abdominal pain as symptoms. I am scared now because I don't understand what the USG report said.