Girls, there's such a thing, I constantly have to run to the bathroom,…

Girls, there's such a thing, I constantly have to run to the bathroom, every 5 minutes something like that, and recently I need to go on a trip that lasts somewhere around 11-12 hours, I think about how to cope with this ? The urge to pee is terrible, and I already get in such a state that if I don't go out, I'll burst, but I don't know how I'll be in the bus ?