😲Is this fine

So I'm four days late and yes it could just be irregular because it was supposed to be my third period but my second was right on track and I had cramps before it wad supposed to start and I might be having really faint cramps I having cramps but I'm also hungry but I've felt the cramps but is hasn't came any advice but I know for a fact that I'm not pregnant because I'm 13 and have never had sex sooooo 😕🤔😕🤔