Hello and thanks for trusting me to help you. I am a board certified consultant with over 30 years of experience.
I understand your concern.
In my opinion you should undergo a ultrasound of whole abdomen for further diagnosis and management.
The symptoms you describe can be due to gastritis/GERD/hiatus hernia.
Also the fullness can be due to flatulence or constipation.
Drink plenty of fluids.
Try to do a regular walk and exercise.
In the meantime you should avoid smoking,caffeine,spicy,fried,greasy food.
Raise the head of the bed by 4 to 6 inches, so you can sleep with your head and chest elevated.
Eat meals two to three hours before bed.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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