Thanks for your query
Description of your symptoms direct to the gastrointestinal pathologies or may be form excessive stress
You can remedy your symptoms by using some advice:
Eat a little and often
Eat meals at regular hours
Do not eat spices,fats and fry
Use much liquids
Do activity 30 min at least per day
And the more important do not stress.
If the symptom do not facilitated you need to follow up with a gastrohepatolog.
Take care of your self