Chest pain. What should i do.

Hello, I am male 30 years old, I have chest pain in the middle of the chest all the time at rest and Feeling a pulse in left side of the breast . And wink in the heart and some times i feel light headed .I am concern because some times i will feel that i will get a heart attack. I can do sport without pain and i breath normally. The doctor gave me propranolol 10 mg 1 -3 times a day as need, is helped me a lot for the discomfort but i don't want use it daily so i don't get used to it. I already did EKG and blood test 4 times in ER and the test is normal and i did stress test , ECHO , x ray , radiology, and all this test is normal. the doctor want do catheterization , coronary angiogram but i am very concern about it because has some risk and my father refused me to do it. the medicine that i take regularly amaldopine 5mg, Omeprazole 20 mg , and baby aspirin 81 mg. what should i do . Do you think my heart is fine > And is there any way to treat the chest pain without this te