I dont think youll have hep C if you used bleach, the fact remains that even if you did share with someone and didnt use anything to clean it its not full proof that you would get it. bleach sounds like a good tool for sterilizing dont worry about it until the tests come through I know how it feels to worry about those type of things(even tho it was just paranoia and delusions cause im a hypocondriac) you pace and you look online for answers and it will help but it wont change the answer on the test.I would reccomend taking a break to do someting that takes your mind off it, hobbies, videogames, movies. But dont worry for some reason I dont think youll have it. But dont share needles anymore and if you are too hooked that you would give in to sharing again, then dont IV or dont hang around with people like that. Why the hell would you wanna be shootin H with someone like that is beyond me. I have a feeling it will turn out ok for you, good luck and post back what happened.
but I dont IV simply for these types of reasons even with a clean needle your veins collapse, scabs, people look at your arms(if you use there and think "oh great a junkie", and once you go to the needle its hard to stop the which arises more complications with finding veins cause you dont have any, cause once you pop you dont stop. I could go on for hours against the Cons of IV