I have a big fear of death and it's affecting my life. Help?

Death scares me so much that a handful of nights i just suddenly get very scared as I get into bed and start crying about it until I fall asleep. I feel like I can't be happy and it's affecting my life and how I think and feel. I think it has somethng to do with the fact that so many relatives and people have died throughout my life. I want to talk to someone, like a doctor or therapist. I feel like I need someone to help me through this because I don't want to live like this anymore. how do I tell my parents though? I'm kind of embarrest and feel like they'll just tell me it's teenage hormones or give me an article to read or go pray. How do I tell them? Could a school counselor help? I just don't know how to tak about this. Only my closest friend knows about this and how I've been feeling for a couple years now.
I have a big fear of death and it's affecting my life. Help?
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