Colitis diagnosed. Which got treated.

I had stomach ache and vomiting on 28 july had an usg done , radiologist told i have hepatomegaly , kidney stone and colitis , started the medicine to control all three , fatty liver and kidney stone were not of immediate concern ( grade 1 fatty live and single 1 mm calculi) , started antibiotics and pain killers because pain was persistent for initial 2-4 days , and after 15 days , yesterday again had an usg done for some reason , and now my colon was normal , no cholistis , and now i am top confused , should i continue medicine , doctor i was seeing was confused too , so again had an usg done today and it too came normal , although fatty liver and stone was there , was the colitis earlier diagnosed , just an bacterial infection that got treated(infectious colitis) , and can this happen can colitis be treated , because i dinot have blood in stool and diarrhea in symptoms , it was just aching pain which was initially severe , does that mean i had infectious colitis which got treated .