Hello and welcome to HCM,
The symptoms of
abdominal pain, shifting of pain from abdomen to chest while laying down, burning sensation and fullness after having small amount of food is suggestive of gastro-esophageal reflux disease (GERD).
These symptoms are not indicative of onset of
menopause.
I suggest you to take an antacid or
proton pump inhibitor empty stomach for symptomatic relief.
For definitive treatment exact cause of these symptoms need to be known.
These symptoms can occur due to
gastritis, hernia, lose gastroesophageal junction (GEJ).
You need to consult an gastroenterologist for clinical assessment and upper gastrointestinal tract endoscopy.
After upper GI endoscopy, the status of
esophagus and stomach will be known and thus further management.
Thanks and take care
Dr Shailja Puri