Confusion in mind. Explain my problem?

Sometimes I feel temprory confusion n my mind, unwanted thoughts coming continously, fear of traffic, If someone is going on flight, I imagining my self flight going to crash and my heart rate gradually increases. And also I have an rotator cuff problem and doctor suggested me to take the surgery but my mind is not supporting me, I don't know to how to explain my problem? In crowded place I feel I'm going to fall on ground and I'll die and I can't travel n crowded public bus also. Sometimes I felt there is nothing n this world why should I live. Many things happening in my mind past 10 years, and my parents took me to temples and all, and they were not aware these kind of a particular disorder. What they know only is fever, cough and cold. So because of that I struggled like anything. Now I come to know this is a serious mental problem. I hope you understand my problem, my English is not good. I tried my best to explain in short, but I have bunch of problems.