on the very end of my period but going swimming today, what should I do?

Alexa
I have no problem using tampons, that is usually what I use. But my flow is very light right now, I'm on day 6. I feel like it's too light for a tampon but I don't know what else to do. Would it be terrible to go without anything? I'm barely even bleeding but I'm scared it might pick back up again. What do you ladies do when this happens to you? Thanks girlies!