How to overcome my fear of death PLEASE HELP?

i have posted a few questions here an yahoo answers regarding this fear i have of dying and there being nothing after for eternity, but none of the answers have really done it for me. I am 16 and was born into a christian family and attended christian school, and had no worry about where i would end up after i die. i remember one day in 8th grade i thought what if we get bored in heaven? what do we do after doing every possible thing there is to do? this was not a problem until i began to think that there could just be nothing after death. the thought of having nothing ahead of me nothing. nothing to look forward to, and more importantly nothing i can do to avoid this. this thought used to only come in small amounts until one night about a month ago. after this nights ive been having anxiety attacks a lot throughout my days. it has become an obsessive thought to the highest degree i have experienced. I now have thoughts that everything is meaningless, and it is hard to find motivation when i realize that nothing i do can avoid death. my life will become an infinitely small blip on the timeline of my existence. there are ties when i can believe in my religion ore cope with this, but I really need more than just "the Bible says..." I wish there was some kind of proof that there is something after. Its getting to the point that I am considering seeing someone or getting some kind of medication. I really feel hopeless and out of options