Seriously, girls. Never get into a swimming pool while you are on your period if you're not going to wear a tampon. Who wants to be swimming in your menstrual blood, because it WILL leak when you wear a pad. Unless your mom forbids you to wear a tampon, you're not too young to use one.
Once your menstrual blood hits the water, the pool will have to be evacuated and sanitized before anyone can swim in it again.
Tampons are easy to use. They even make ones for teens that are slimmer; they make ones for girls who do sports, so unless your mom tells you no, use a tampon or DON'T SWIM. I have had girls on here say their mom forbids them to use a tampon and I cannot understand why.