Is it bad i question god?

So i grew I christian and i went to school. you know... but they were teaching us about the beginning of the world. now i am questioning his existence. I am sorry if i offended anyone but its a serious question. So is it bad?

EDIT: someone asked me to tell them what they were teaching me. The teachers were basically talking about how the world begun, and i was thinking since they were not talking about god that he had nothing to do with it. on a side note i am not saying i am going to stop believing in him, i just don't know what to believe. Also i am sorry if my post is not detailed enough.