Blood from lungs coming frequently 4time

1. Why am I experiencing bleeding immediately after eating anything? 2. Does eating PG (paying guest) food cause bleeding? 3. I experience bleeding after walking 1 km (to and from college to PG). How should I rest? Do I need to take a break from college? 4. Why does blood rush up rapidly when I lie down, especially in the evening and afternoon? 5. How can I stop the bleeding? I have tried all possible medications, but the bleeding is not stopping. 6. Could this be a symptom of any other underlying disease? What possible treatments are available? Do any internal examinations need to be done? 7. Could this be due to cold water, high blood circulation pressure, or lung-related issues? Could it be hemoptysis? 8. I also experienced bleeding at 4:30 AM as soon as I woke up. What could be the reason? 9."I experienced bleeding four times in a day, even after taking medicine."