Why am i paranoid over these things?

like, okay these are things im paranoid over. one is this--> (nature picture video) -> http://www.youtube.com/watch?v=5AnKBc4W86g&feature=related on 1:53...the wet feathers. that bugs me sooo bad. i started scratching my screen wen i saw it!!!. and like spores on the back of a fern leaf....i really cant explain it. i dont have anything that i know of..but does anyone know what this is?? another thing is the edge of a straw wrapper...ya know?? the little tiny lines that go along the straw wrapper (long ways)? i dont know but one day i had to rip it apart until i was satisfied. so please help. i wanna know if its anything...and why in the world those small things like that(theres more) bother me!! thanks:))