That what happens when you first start man. We all go through similar stuff but it will get better. My finger tips are really fat, well I'm not a circus freak but they're fat enough to where it easy to bump a nearby string. You'll find a way to get better, maybe even go to a guitar shop and a take a few lessons. That's should help. Stick with man it's worth it once you get the hang of it. good luck. :)