Hi
welcome to the health care magic and thanks for asking your query here
Your medical history can be suggestive of many medical conditions related to gastro intestinal system including a Gastro esophageal reflux disease(
GERD),
Irritable bowel syndrome,
gastroenteritis,
As you have described the throat pain which is most probably due to GERD in which stomach acid regurgitates into your throat causing pain and burning sensation
All these symptoms and even your GERD can be related to gluten intolerance ( gluten is a protein found in wheat) as some people just can't digest gluten and leads to these symptoms
All this needs medical treatment as well as life style and diet Management
You can take
gluten free diet by avoiding any food product containing wheat and switch to rice from wheat for few days to see if it makes any different
Also eat less and take many small meals than a single larg meal
Also avoid sleeping atleast 4 hour after meal
Raise the head of your bad at night
Mornig walks and exercise will help too
If nothing helps than i would strongly suggest you to visit a gastroenterologist to further evaluate the condition
I hope it help thanks and get well soon