Summarize the following:
This allows you to assess the situation privately and find the supplies you need to make it through the rest of the day. As soon as you suspect your period has started, discreetly ask your teacher for permission to go to the toilet. Try approaching your teacher while the rest of the class is busy working. You can explain the situation directly if you feel comfortable doing so, but if not, you could also get the message across with something along the lines of, "I need to go to the toilet; it's a girl problem." If you've suddenly found yourself with your period and have no supplies, then don't be embarrassed about going to your friends to ask if they have any pads or tampons you can use. If they can't help you, try asking one of your female teachers for help (just know that women no longer need to use tampons or pads after they go through menopause, which happens around the age of 45-50, so you may not want to ask your older teachers). You can even go to the school office to ask for extra supplies, or ask them to call your mother if you really need help. Don't be afraid to go there if you really have an emergency and can't get help anywhere else. If you need more help, consider visiting the nurse. The nurse or school counselor can explain the ins and outs of menstruation if this is your first period, or help you obtain feminine products and a change of clothing if needed. If you have no better options and find yourself in the bathroom with the new arrival of your monthly visitor, then your best bet may be to make an emergency pad. All you have to do is take a long piece of toilet paper and wrap it around your hand at least ten times until the pad is thick enough. Place it, lengthwise, in your underwear, and then take another long piece of paper and wrap it around the pad and your underwear another 8-10 times, until the pad is securely in place. You can repeat this one more time with another piece of toilet paper. Though this isn't nearly as good as the real thing, it will do in a pinch. If you have your period but it's really light, you can also make an emergency pantyliner. Just get a length of toilet paper about as long as the panty line of your underwear, fold it over itself two or three times, and place it in your underwear. If you have one available, wrap a spare T-shirt, jacket, or sweatshirt around your waist, especially if you suspect menstrual blood has leaked through your clothing. This should help hide any dark stains until you can change clothing. If this is your first period, keep in mind that first periods generally aren't super heavy, so it's possible that you've noticed before the blood has leaked through your clothes. That being said, it's still a good idea to take care of the issue as soon as possible to limit the risk of any embarrassing leakage. If you discover that blood has leaked through your clothes, change into your PE kit (if available) or ask the school nurse or counselor to call your parents for a change of clothes. Don't worry about classmates pointing out your sudden wardrobe change; if anyone questions it, you can casually tell them you spilled something on your pants and leave it at that.
Go to the toilet as soon as possible. Ask a teacher, nurse, or friends for backup if you need it. Make an emergency pad if necessary. Wrap a jacket around your waist if needed.