Ever missed your period? Healthwise

Zimme

Ever gone a couple months without your period? What does this mean? Recently I've gone 2 months without my period. I'm active, healthy and going to uni, work at McDonald's and I gym. I haven't had my period since December and now it's March. This had happened before and now I'm a little worried. I'm not in a relationship. What's happening to me? PS- I don't want to see a doctor 😷.