I’m 17 and have never really used a tampon on a heavy period day, usually just on the last couple of days if i wanted to go swimming. I’ve always liked the idea of my blood being able to come out naturally, but i hate the feeling of sitting in my blood. I want to try to start using tampons. Should i wear a pad in case i leak? How often should i change the tampon at school? What kind of tampons should i buy? (My flow is pretty moderate but it can get heavy at times.)