thank you for using healthcare magic
Your symptoms are suggestive of gastritis
with regurgitation which can be due to multiple causes , one of the probable cause is hiatus hernia
the two dark patch that you have mentioned on your ultrasound
is a non specific finding and its better you wait for the result.
Till then you could start on an oral antacid (pantoprazole
40mg once daily before food) , have light food, small frequent meals, walk around for sometime after meals , stop coffee, tea, have cold milk and use two pillows while sleeping.