Period Problem

My period problem is that I don’t have one. I got my period one time 482 days ago and I haven’t gotten since. I haven’t told my mom because I know that your period can be irregular at first, but I’m starting to get worried. All my friends make fun of me because I “can’t get my period right” and they all say the doctors gonna have to medically induce it. Should I talk to my mom, or is this really just normal?