Thanks for posting your query.
There is high chances of gastric problem which could be gastritis
You should consult with internal medicine specialist and should go for thorough check up.
You should go for complete hemogram, thyroid profile, blood sugar, and serum electrolytes level.
You should also go for endoscopy
You should take proton pump
inhibitors, prokinetics and antiemetics.
You should take frequent amount of soft meals.
Dr. Mayank Bhargava