Everyone's body is different, and this is reflected in our menstrual cycles! It's very normal to experience different symptoms, like fluctuations in mood and energy levels, throughout your cycle. If you'd like to learn more about the phases of the menstrual cycle, we have lots of info in this article.
You may also notice changes in the colour of your period blood — again, totally normal, and you can read more on that here.
Tracking your cycle using an app or a diary is a great way to get to know your body and pick up when something might be wrong. It's very common for your cycle and period to change throughout your life or if you start using a new method of contraception, but if there is anything you are concerned about, our advice is always to visit your GP.