HELPPPPPPPP!PLEASE!!!!!!!!!!!!…

Okay so today i'm going to a birthday party and im on my period. We are out of pads. there is no way that we could go and get pads. my mom is at work till 3 and the party starts at 2:30 so my grandma has to drive me. at her party we plan to wear bathing suits and i dont know what to do?!?!?