Thanks for posting your query.
With the available described symptoms, there appears to be possibility of acute gastroenteritis
or peptic ulcer disease
Ultrasound imaging is not only advised for pregnancy but also for intraabdominal pain and appendicitis
Presence of curling pain along with abdominal pain suggests the diagnosis.
You should remain in touch with your treating doctor and should go for prescribed medications.
If your conditions improves then you can stop treatment after 5-7 days.
If your conditions won't improve then you should also go for CT/ MRI scan and endoscopy.
Meanwhile, you should also take proton pump
inhibitors along with antacids.
Dr. Mayank Bhargava