When did you get your first period?

I was 9 years old when I really knew that I had my period. It was 5 days before Christmas (thanks for the early present Mother Nature!) and I woke up at 6AM sitting in the biggest puddle of blood. I was calm until after trying to deal with it I bled through 3 more pairs of pjs. I ended of padding my underwear with toilet paper and watching cartoons until my mom woke up. Unfortunately for my dad he was first and got the melt down. He was super chill and grabbed the first pad he could find and did his best to explain how it works hahaha