I wanna go to the pool while on my period but I don't like tampons if I wear layers of shorts would it still leak please answer it's 5 days away going to the pool?

OMG. DO NOT GET INTO THE POOL WHILE YOU ARE ON YOUR PERIOD AND YOU ARE NOT WEARING A TAMPON.

Do you seriously think the bleeding will magically stop once you enter the water? Your options are to wear a tampon so you don't bleed when you get in or skip going to the pool. 

Even if you don't like to wear a tampon, you need to weigh your dislike versus protecting you and everyone else from your menstrual blood. Surely you can take wearing a tampon for a few hours. Wearing layers will not help.