Hello moms, my son is 1 year and 9 months old. We've been sick about …

Hello moms, my son is 1 year and 9 months old. We've been sick about six times this year (vomiting, diarrhea, fever). We were hospitalized twice, once with intestinal infection, and then again with COVID-19 added. We went to the hospital six times in total, we called an ambulance every time, they diagnosed us with intestinal infection each time. They couldn't find the cause, so we had an ultrasound at the hospital, but only enlarged liver due to the virus. We got sick again with vomiting, fever, and severe discomfort. We went back to the hospital and they diagnosed it again. Yesterday, we had an ultrasound of the gallbladder, it's deformed in the shape of S