Pain in heart. Suggest a solution.

Hello doc, from last 5-6 years I am suffering from a mild heart pain, all possible test except angiography have done so far several times, meanwhile found I have BP. Now regularly taking medication for that. Also done endoscopy to check if any other issue but nothing found. Now I take hot water in morning. not able to do exercise because of tight schedule and late wakeup and late sleep after 12pm-1am (sometimes even after 2am). I have a small business so busy 10am to 10pm. I think I have mild constipation and digestion problem but not found any suggestion from doctor. Because of this heart pain a mild headache is there if skip lunch or a meal, feel angry, not able to focus 100% on business, less tolerative. Please suggest a solution. Thanks.