The symptom Complex that you are describing along with the the negative test results of the Labs suggest that you might be suffering from a gastric outlet obstruction. You need to Get a Contrast Enhanced CT scan of the Abdomen and an upper gastrointestinal endoscopic examination of the stomach and duodenum to look for any suspicious Pathology. If CECT isnt available  at least a saline load test should be performed

As per your symptoms You require an ultrasound And also i would like to ask if you are diabetic ?? Till then you can do a course of Tablet levosulpride 1 bd or tablet rbson-L 1 bd ( two times a day )

You may be having hiatus hernia. Groin hernia is unlikely.consult a surgeon for physical exam to rule out groin hernia

No it’s cause due to hiatus hernia need UGIE

Have you noticed any swelling or pain in your groin region? Your symptoms as you have mentioned them are unlikely to be because of a groin hernia. You may be suffering from Acid peptic disease (sometimes referred to as acidity or gas or ulcer). An upper Gastrointestinal endoscopy would be the best test to confirm or rule out this. Until then, regular meals (avoid longer than 3 hours interval between meals in daytime) and avoiding spice / alcohol /smoking may help to a certain extent

Upper giendoscopy should be done...u should take antacids...for shortness of breath consult any good physician.

No groin hernia does not cause shortness of breath Kindly get UGIE done Visit Surgeon

Whether endoscopy done.. Rarely it would be due to groin hernia unless it is obstructed.. If OGD not done..u have to do it..that will guide us..