What happens if you get your period in school and you didn't know it was going to happen?

Answer 1

The blood should be stopped a a tampon or pad if you are not wearing one it will flow onto your underwear and slowly go though to your pants or if you have a skirt on it will run down your leg and into you shoe or onto the floor

Answer 2

If your period starts in school, when you're not using a menstrual cup or pads ready for it, the your underwear will get bloody and if heavy it may soak through your clothing. Just put on a pad or use other menstrual products, which you should have in your bag with you at all times any way. You can also ask a friend or teacher for supplies, or if you have to you can just use toilet paper in your underwear.