Hi irock, Thanks for writing in to Healthcare Magic! Three important diseases of gut can cause a pain abdomen like that Infection Ischemia- decreased blood supply inflammatory bowel disease. Ischemia is dangerous and typically occurs in elderly persons and also in diabetics and hypertensives. this is a serious possibility and hence you should repeat an ultrasound abdomen in two days to see the condition. To treat the infection you current treatment id okay; continue it for 5days at least. If you have any further query please let me know I would try to answer it for you. Wish you a great health!