/cgl/ - Cosplay & EGL

There's a con next weekend and it looks like my period will be landing on Friday.
Normally I wouldn't care as much because this kinda happens all the time for me, but this time I'm wearing a white bathing suit with my cosplay.
As gross as they are, I normally wear pads because tampons tend to her for me (I have them in right and all. I dunno).
Do you guys have any good advice on what I should do? I was thinking of just wearing a tampon and a thin pantyliner, but if there are any suggestions on how to get around that, they'd be greatly appreciated.