Do i suffer from depression?

i dont it just happens when i am not busy or doing somehting..im almost 16 .. when im busy, hanguing out and doing stuff it doesnt come to my mind all of those things, but when im doing nothing, hearing depressing songs it just makes me depresed, i haved tought of suicide, im scared of just spleeing because i think that while sleeping i coould kill myself, im scared of my future, of my parents dying , i dont know what to do..