Is being on swim team going to irritate my navel ring?

I'm 13 and got my belly button pierced about 19 days ago. I was so excited and anxious to get it done, I totally forgot about swim team. I've been swimming in chlorine, my piercer told me that was fine after 2 weeks, and nothing has happened? I'm scared that by swimming aggressively and constantly, especially with a tight one-piece swim suit will irritate it. Will I be fine to be on it, starting around October-ish? Also, those who have had it- is a simple barbell that noticeable through a one-piece? Thanks!(: