Depending on where you are you training and with whom. I know that certain places the instructor is a black belt but, may not be allowed to confer rank. I have been fortunate to have been studying and training with a shihan in Tomiki so I had a pretty good grasp on what rank is and somewhat when it may come. Whatever style you are learning, google it and find a home page. It may be generic but, should provide you with what the system is and roughly a time frame spent in each rank. Trust in your teacher they do know and if it has only been a few months into it, what's the rush? Ask for books, literature, or a website.