Yes, agree that it is very common to be irregular at 14. I would talk to your mom or caregiver about it. I'm sure at this point you are not having access to your doctor without your parents---- so it is really good to develop a relationship with your mom where you can tell her what is going on. She's your best support. good luck
At your age, irregular periods are very common. I wouldn't worry too much unless you've been having unprotected sex. Things like becoming more active or eating less can commonly make your period more irregular or even make it stop for several months. You mentioned your period is irregular - - if it's usually irregular, don't worry. But if it's normally regular and this is out of the blue, it can't hurt to mention it to your doctor. In the meantime, don't stress too much, you're likely fine!