Can u wear a pad 2 go in the pool?

whats the diff of wearing a pad or tampon in the pool? i dnt wear tampons n ive nvr dared 2 go in the pool while on my period but i just got it today and i had plans 2 go to the pool 2morow with 2 of my best friends so can i wear the pad n go in the pool or do u recommend the tampon