Help me! Im adopting weird behaviors!?

So lately ive been adopting weird behaviors. Ive been doing some "actions" because if i dont do these certain actions, something bad will happen to me. What i mean by "something bad", it can be anything between getting a bad mark on a very important test, having my parents mad at me or being in a car accident or being killed at a young age. The "actions" ive been doing have been like, turning the water on and off three or four times, looking at myself in the mirror at night before i go to bed for minutes, or checking the hour of my ipod for several times. Sometimes i would put one my little earings (the ones that are meant to be pierced ) INSIDE my ear, and take it out. i do a bit more actions like thAt. I feel like these actions are my kind of supersticions, and if i dont do them, i might have something bad happen to me (like i mentionned before).

Deep down i know these " actions " are irrelevant to what will happen in my future, and they wont impact my future. But i still do them.

**And i need you guys' advice in your opinion of that story, and what i can do to stop these behaviors (dont say " GO TO A PSYCOLOGIST"cause i wont.)

**ALSO these behaviors have started a little more then a few days, a little after watching 4 or the Saw movies. Ive been wondering if the horror movies have an impact on my behavior, or of its normal that i act like that.

Please answer seriously! I wont tolerate mean or insensitive answers.:(