Thanks for your query.
It is due to hyper acidity
.Sudden change in life style like food habit or sleeping pattern are also may be the cause. I am sharing with some simple tips which might benefit you.
* Start your day with a glass of Luke warm water and Triphala powder to detoxify your body.
* Avoid fried or junk food for breakfast
* Don't stay hungry for longer duration.
* Drink 8_10 glass of water daily
* Avoid ice cream or sweets just after meal, red meat if you are a non vegetarian, food stuff prepared with maida * Sleep on time and atleast for 6_7 hours.
Even after following such regimen if the problem persists you can look for online consultation for Ayurvedic medicines.