For those who believe in God...?

He supposedly created everything, but then who created God? I can't bring myself believe in him because there's no logic to it, in my opinion. Everything starts from something... So what started God? He didn't just poof - appear. I don't intend to offend anyone who believes in him, but I'm really curious. What do you think was before God? Surly there was something. I just don't know. This is why I don't believe in anything, I honestly have no idea what to believe. I need proof. Reason. Logic.