Hi and welcome to HCM.
you should do liver enzymes findings.
The most common liver disorders which is found by ultrasound
is fatty liver
which can be found in healthy people, but usually is resulting from elevated blood lipids
and elevated blood sugar. If ultrasounds didnt find anything and viral markers are negative then you have no reason to be concerned. YOu should treat it by changing dietary and lifestyle habits. Do exercise, avoid alcohol, smoking
, fats, fast food and carbonated drinks. Eat more fruit and vegetables, boiled meat and follow some of hepatoprotective diets. Findings usually improves on such measures. If not, then some medicines can be prescribed, but I suggest to go step by step.
Wish you good health.