I am 19 years old. I experienced more than 3x a week of hard in breathing in my throat I feel like there is something that I can not breathe properly. I also have a heartburn.

Question

It can be because of acidity or sore throat. I need to know ur case in detail to be able to diagnose. 
In the meanwhile do this 
1. Don't Overeat
2. Don't take tea empty stomach. Eat something like a banana (if you are not diabetic) or any seasonal fruit or soaked almonds and a glass of water first thing in the morning (within 10 mins of waking up). No only biscuits or rusk will not do. 3. Take your breakfast every day. Don't skip it.
4. Have light meals every 2 hours (in addition to your breakfast, lunch n dinner) e.g. Nariyal paani, chaach, a handful of dry fruits, a handful of peanuts, any fresh n seasonal fruit, a cup of curd/milk etc
5. Finish your dinner at least 2 hours before going to sleep.
6. Maintain active life style. This is most important n non negotiable part
7. Avoid fast foods, spicy n fried foods, Carbonated beverages
8. Take a lot of green vegetables n fruit. 
9. Drink lot of water.
10. Curd is good for u.
11. Everyday preferably sleep on same time
For more details you can consult me.

Karuna Chawla · Accepted Answer

It can be because of acidity or sore throat. I need to know ur case in detail to be able to diagnose. 
In the meanwhile do this 
1. Don't Overeat
2. Don't take tea empty stomach. Eat something like a banana (if you are not diabetic) or any seasonal fruit or soaked almonds and a glass of water first thing in the morning (within 10 mins of waking up). No only biscuits or rusk will not do. 3. Take your breakfast every day. Don't skip it.
4. Have light meals every 2 hours (in addition to your breakfast, lunch n dinner) e.g. Nariyal paani, chaach, a handful of dry fruits, a handful of peanuts, any fresh n seasonal fruit, a cup of curd/milk etc
5. Finish your dinner at least 2 hours before going to sleep.
6. Maintain active life style. This is most important n non negotiable part
7. Avoid fast foods, spicy n fried foods, Carbonated beverages
8. Take a lot of green vegetables n fruit. 
9. Drink lot of water.
10. Curd is good for u.
11. Everyday preferably sleep on same time
For more details you can consult me.