How to not be so bloated during that time of the month?

Okay, so during my period I always get bloated but I usually just ignore and wait for it to go away. But we are currently on vacation in disneyland and..... none of my shorts or jeans are fitting :"( I have one pair of sweats but its hot. Did I mention the fact my gma loves to poke my stomach and say I have a watermelon in there, I'm not that bloated >:( I need help! How do you recuce the bloating?? Answers are appreciated. :)