Ok iam going on a school trip and i think it takes about an hour and a half to get there.ill be on a bus with a few of my friends and iam really scared incase i need the loo. the bus will have no toilets and even if it did i wouldnt be able to use it cause all the boys open the toilet doors. i have got this thing called graves disease and some of the symptoms are bowel movement and i always need a pee! even if i go before we leave i always end up needing it again! sometimes i just think about it too much! what could i do to keep my mind off it?