2 Day Period! Whas Going On?

well, maybe your periods from now on start to get lighter, I used to bleed for 2 weeks heavy and non-stop,when I hit 18 everything changed to 2 days bleeding only and so much more light and I am like that since. In the course of life, your period will start changing from heavy to light, for others from light to heavy, they change, they do not remain the same for an entire life; this is my own experience and what I have spoken with my friends, for them is the same.