Period length

Your period will be irregular for a little bit, mine lasted 2/4 weeks at a time. I started when I was 11, The didn’t regulate until I was 12 1/2-13

Mine took a two lush years to level out. It was better after a year but now I am almost exact every month

You should have a physical soon at the drs and when you are there just ask if you can go in alone so you can speak to the dr in private. Why are you not comfortable talking to your mom? Maybe you can work on trying to build that up so you have someone you trust and that knows you. She loves you more than life and wants the best but we are human and most of the things we do are out of love and fear for our kids. But it’s not easy to talk openly about if you don’t feel comfortable so maybe an Aunt?