Prolonged losemotion. Overall.

Hi my son had fever 6 days ago with a max of 102.5 that lasted less than 48 hrs and had losemotion twice a day. Then vomittings. Have been giving him probiotic and ondem. Now there is no fever and no vomitting since yesterday but he is extremely tired, sleepy and doesn't feel like eating anything. Still has losemotion and its still watery frothy and bad. It doesn't seem to be getting better even after 6 days. Doc said its viral. Please provide your review what it could be...my main concern is his lack of activity and hunger and stomach doesn't seem to be getting btr. Also m worrried if it could be typhoid he has had typhoid two years back. Dont want to uneccesarily get tests done but dont see an improvement overall.